Landing Ship, Tank

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A Canadian LST off-loads an M4 Sherman during the Allied invasion of Sicily in 1943 LST Sicily.jpg
A Canadian LST off-loads an M4 Sherman during the Allied invasion of Sicily in 1943

Landing Ship, Tank (LST), or tank landing ship, is the naval designation for ships first developed during World War II (1939–1945) to support amphibious operations by carrying tanks, vehicles, cargo, and landing troops directly onto shore with no docks or piers. This enabled amphibious assaults on almost any beach.[ dubious ]

Contents

The LST had a highly specialized design that enabled ocean crossings as well as shore groundings. The bow had a large door that could open, deploy a ramp and unload vehicles. The LST had a flat keel that allowed the ship to be beached and stay upright. The twin propellers and rudders had protection from grounding. The LSTs served across the globe during World War II including in the Pacific War and in the European theatre.

The first tank-landing ships were built to British requirements by converting existing ships; the UK and the US then collaborated upon a joint design. The British ships were used in late 1942 during the Allied invasion of Algeria, by 1943 LSTs participated in the invasion of Sicily and mainland Italy. In June 1944 they were part of the huge invasion fleet for the Normandy landings.

Over 1,000 LSTs were laid down in the United States during World War II for use by the Allies; the United Kingdom and Canada produced eighty more. [1] [2] [3]

LST Mk.1

The Royal Navy during the Second World War HMS Bachaquero at Bone IWM A 15709.jpg
Bren Gun Carriers being loaded at Bone Harbour through the bow doors of HMS Bachaquero
Class overview
NameLST Maracaibo class
Builders Furness Shipbuilding Company, Haverton Hill-on-Tees
OperatorsNaval Ensign of the United Kingdom.svg  Royal Navy
Succeeded byBoxer
Completed3 (Misoa, Tasajera & Bachaquero)
General characteristics
Tonnage4,800 long tons (4,877 t) GRT
Length382 ft (116 m) [4]
Beam64 ft (19.5m)
Draught
  • Fully laden :
  • 15 ft (4.6 m) aft
  • 4 ft (1.2 m) forward
RampsDouble hinged ramp, effective length of 100 ft (30 m)
PropulsionReciprocating steam engine, 2 shafts, 3,000 shp
Capacity18 × 30 ton tanks or 22 × 25 ton tanks or 33 × 3-ton trucks [4]
TroopsBerths for 217 troops [4]
Complement98 Combined Operations personnel
Armament
  • 1 × twin 40 mm gun
  • 6 × 20 mm guns [4]
  • 3 × Lewis guns
  • 2 × 4 in (100 mm) smoke mortars [4]
NotesEquipment: 2 × 50 ton derrick cranes
HMS Thruster FL9083.jpg
HMS Thruster
Class overview
NameLST (1) Boxer class
BuildersHarland and Wolff
OperatorsNaval Ensign of the United Kingdom.svg  Royal Navy
Preceded byMaracaibo
Succeeded byLST (2)
Completed3 (Boxer, Bruiser, Thruster)
General characteristics
TypeLanding Ship, Tank Mark I
Displacement
  • 3,620 long tons (3,678  t) standard
  • 5,410 long tons (5,497 t) full load
Length400 ft (120 m)
Beam49 ft (15 m)
Draught14 ft 6 in (4.42 m)
PropulsionSteam turbines, 2 shafts, 7,000 shp (5,200 kW)
Speed
  • 18 knots (33  km/h; 21  mph) laden to beaching draught
  • 16.5 knots (30.6 km/h; 19.0 mph) at deep
Range9,000 nmi (17,000 km; 10,000 mi) at 14 kn (26 km/h; 16 mph)
Capacity13 Churchill tanks or 20 medium tanks, 27 vehicles on upper deck, 193 men
Complement169
Armament
NotesEquipment: 1 × 40 ton crane [5]

Maracaibo landing ships

The British evacuation from Dunkirk in 1940 demonstrated to the Admiralty that the Allies needed relatively large, ocean-going ships that could handle shore-to-shore delivery of tanks and other vehicles in amphibious assaults upon the continent of Europe. As an interim measure, three 4,000- to 4,800-GRT "Lake tankers", built to pass over the restrictive bars of Lake Maracaibo, Venezuela, were selected for conversion because of their shallow draft. Bow doors and ramps were added to these ships, which became the first tank landing ships, LST (1): HMS Misoa, Tasajera and Bachaquero. [4] They later proved their worth during the invasion of Algeria in 1942, but their bluff bows made for inadequate speed and pointed out the need for an all-new design incorporating a sleeker hull.

Boxer-class

The first purpose-built LST design was HMS Boxer.[ dubious ] It was a scaled-down design from ideas penned by Prime Minister Winston Churchill. In order that it could carry 13 Churchill infantry tanks, 27 other vehicles and nearly 200 men (in addition to the crew) at a speed of 18 knots (33 km/h), it could not have a shallow draught sufficient for easy unloading. As a result, each of the three (Boxer, Bruiser, and Thruster) ordered in March 1941 had a very long ramp stowed behind the bow doors. [6]

The ships were built at Harland and Wolff from 1941 and completed in 1943. Bruiser and Thruster took part in the Salerno landings

All three were intended to be converted to Fighter Direction Ships in order to have ground-controlled interception of enemy aircraft during landing operations but only Boxer was converted. [7]

The U.S. were to build seven LST (1) but in light of the problems with the design and progress with the LST Mark II the plans were cancelled. Construction of the LST (1)s took until 1943 and the first US LST (2) was launched before them. [8]

LST Mk.2

LST-942 underway in late 1944.jpg
LST-942 underway soon after completion, late in 1944
Class overview
NameLST (2)
Builders
Operators
Succeeded by Talbot County class
Subclasses
  • LST-1 class
  • LST-491 class
  • LST-542 class
Built1942-1945
In commission1942-1971 (US)
Completed1052
Cancelled100
Active
  • 1 (Singapore)
  • 1 (Mexico)
  • 3 (Taiwan)
  • 2 (Vietnam)
  • 3 (Philippines)
  • 1 (US Maritime Sealift Command)
Preserved
General characteristics
Displacement
  • 1,780 long tons (1,809 t) light
  • 3,880 long tons (3,942 t) full load
Length327 ft 9 in (99.90 m)
Beam50 ft (15 m)
Draught
  • Unloaded :
  • 3 ft 4 in (1.02 m) bow
  • 7 ft 6 in (2.29 m) stern
  • Loaded :
  • 8 ft 2 in (2.49 m) bow
  • 14 ft 1 in (4.29 m) stern
Propulsion2 × General Motors 12-567 diesel engines, two shafts, twin rudders
Speed12 knots (14 mph; 22 km/h)
Boats & landing
craft carried
2 to 6 LCVPs
TroopsAbout 140 officers and other ranks
Complement8 to 10 officers, 100 to 115 enlisted
Armament

Development

At their first meeting at the Atlantic Conference in Argentia, Newfoundland, in August 1941, President Franklin D. Roosevelt and Prime Minister Winston Churchill confirmed the Admiralty's views. In November 1941, a small delegation from the Admiralty arrived in the United States to pool ideas with the United States Navy's Bureau of Ships with regard to development of ships and the possibility of building further Boxers in the US. [9] During this meeting, it was decided that the Bureau of Ships would design these vessels. As with the standing agreement, these ships would be built by the US so British shipyards could concentrate on building vessels for the Royal Navy. The specifications called for vessels capable of crossing the Atlantic, and the original title given to them was "Atlantic Tank Landing Craft" (Atlantic (T.L.C.)). Calling a vessel 300 ft (91 m) long a "craft" was considered a misnomer and the type was re-christened "Landing Ship, Tank (2)", or "LST (2)".

The LST (2) design incorporated elements of the first British LCTs from their designer, Sir Rowland Baker, who was part of the British delegation. One of the elements provided for sufficient buoyancy in the ships' sidewalls so that they would float the ship even when the tank deck was flooded. [9] The LST (2) gave up the speed of HMS Boxer, at only 10 knots (19 km/h), but carried a similar load while drawing only three feet (91 cm) forward when beaching.

Design

Tank landing ship technical diagram 1959.png

Within a few days, John C. Niedermair of the Bureau of Ships sketched out an awkward looking ship that proved to be the basic design for the more than 1,000 LST (2) that were built during World War II. To meet the conflicting requirements of deep draft for ocean travel and shallow draft for beaching, the ship was designed with a large ballast system that could be filled for ocean passage and pumped out for beaching operations. [10] An anchor and mechanical winch system also aided in the ship's ability to pull itself off the beach. The rough sketch was sent to Britain on 5 November 1941 and accepted immediately. The Admiralty then requested that the United States build 200 "LST (2)" for the Royal Navy under the terms of lend-lease.

The preliminary plans initially called for an LST 280 feet (85 m) in length; but, in January 1942, the Bureau of Ships discarded these drawings in favor of specifications for a ship 290 feet (88 m) long. Within a month, final working plans were developed that further stretched the overall length to 328 feet (100 m) and called for a 50-foot (15 m) beam and a minimum draft of 3.8 feet (1.2 m). This scheme distributed the ship's weight over a greater area, enabling her to ride higher in the water when in landing trim. The LST could carry a 2,100 short tons (1,900 t) load of tanks and vehicles. The larger dimensions also permitted the designers to increase the width of the bow door opening and ramp from 12 to 14 feet (3.7 to 4.3 m) in order for it to be able to accommodate most Allied vehicles. As the dimensions and weight of the LST increased, steel plating thickness increased from 14-inch (6.4 mm) to 38-inch (9.5 mm) on the deck and sides, with 1-inch-thick (25 mm) plating under the bow. [11] By January 1942, the first scale model of the LST had been built and was undergoing tests at the David Taylor Model Basin in Washington, D.C.

Provisions were made for the satisfactory ventilation of the tank space while the tank motors were running, and an elevator was provided to lower vehicles from the main deck to the tank deck for disembarking. In April 1942 a mock-up of the well-deck of an LST was constructed at Fort Knox, Kentucky to resolve the problem of ventilation within the LST well-deck. The interior of the building was constructed to duplicate all the features found within an actual LST. Being the home to the Armored Force Board, Fort Knox supplied tanks to run on the inside while Naval architects developed a ventilation system capable of evacuating the well-deck of harmful gases. Testing was completed in three months. This historic building remains at Fort Knox today. [12]

Early LST operations required overcoming the 18th-century language of the Articles for the Government of the United States Navy: "He who doth suffer his ships to founder on rocks and shoals shall be punished..." [13] There were some tense moments of concept testing at Quonset, Rhode Island, in early 1943 when designer Niedermair encouraged the commanding officer of the first U.S. LST to drive his ship onto the beach at full speed of 10 knots (12 mph; 19 km/h). [11]

Production

USS LST-983 (USS Middlesex County) with LST-601 (USS Clarke County) in the background, launches a Marine LVTP-5 for a waterborne landing, in the 1960s. When carrying amphibious tractors, an LST could land her payload from offshore without beaching. USS Middlesex County (LST-983) launches a LVTP-5, in the 1960s (L45-182.02.01).jpg
USS LST-983 (USS Middlesex County) with LST-601 (USS Clarke County) in the background, launches a Marine LVTP-5 for a waterborne landing, in the 1960s. When carrying amphibious tractors, an LST could land her payload from offshore without beaching.
USS LST-325 (left) and USS LST-388 unloading while stranded at low tide during the Normandy Invasion in June 1944. Note: propellers, rudders, and other underwater details of these LSTs; 40 mm single guns; "Danforth" style kedge anchor at LST-325's stern. LSTs 325, 388;1016032501.jpg
USS LST-325 (left) and USS LST-388 unloading while stranded at low tide during the Normandy Invasion in June 1944. Note: propellers, rudders, and other underwater details of these LSTs; 40 mm single guns; "Danforth" style kedge anchor at LST-325's stern.
USS LST-742 on 13 October 1950 at Wolmi-do island, Incheon Harbor, South Korea, loading supplies for the upcoming Wonsan invasion LST-742,1950;1016074201.jpg
USS LST-742 on 13 October 1950 at Wolmi-do island, Incheon Harbor, South Korea, loading supplies for the upcoming Wonsan invasion
A GM EMD 12-567ATLP diesel engine as installed in USS LST-393, located in Muskegon, Michigan, July 2017. The engines were rated at 900 HP (each) at 744 RPM. GMLSTdieselengine.jpg
A GM EMD 12-567ATLP diesel engine as installed in USS LST-393, located in Muskegon, Michigan, July 2017. The engines were rated at 900 HP (each) at 744 RPM.

The LST(2) was built as the LST-1 class and the LST-491 class.

In three separate acts dated 6 February 1942, 26 May 1943, and 17 December 1943, Congress provided the authority for the construction of LSTs along with a host of other auxiliaries, destroyer escorts, and assorted landing craft. The enormous building program quickly gathered momentum. Such a high priority was assigned to the construction of LSTs that the previously laid keel of an aircraft carrier was hastily removed to make room for several LSTs to be built in her place. The keel of the first LST was laid down on 10 June 1942 at Newport News, Virginia, and the first standardized LSTs were floated out of their building dock in October. Twenty-three were in commission by the end of 1942.

The LST building program was unique in several respects. As soon as the basic design had been developed, contracts were let and construction was commenced in quantity before the completion of a test vessel. Preliminary orders were rushed out verbally or by telegrams, telephone, and air mail letters. The ordering of certain materials actually preceded the completion of design work. While many heavy equipment items, such as main propulsion machinery, were furnished directly by the Navy, the balance of the procurement was handled centrally by the Material Coordinating Agency—an adjunct of the Bureau of Ships—so that the numerous builders in the program would not have to bid against one another. Through vigorous follow-up action on materials ordered, the agency made possible the completion of construction schedules in record time.

The need for LSTs was urgent, and the program enjoyed a high priority throughout the war. Since most shipbuilding activities were located in coastal yards that were mainly used for construction of large, deep-draft ships, new construction facilities for the LSTs were established along inland waterways, some converted from heavy-industry plants, such as steel fabrication yards. Shifting the vessels was complicated by bridges across waterways, many of which were modified by the Navy to permit passage. A dedicated Navy "Ferry Command" orchestrated the transportation of newly constructed ships to coastal ports for final fitting out. Of the 1,051 LSTs built during the war, 670 were supplied by five "cornfield shipyards" in the Middle West. Dravo Corporation's facility at Neville Island, Pennsylvania, designated the lead shipyard for the project, built 145 vessels and developed fabrication techniques that reduced construction time and costs at all of the LST shipyards. The Missouri Valley Bridge & Iron Co. built the most LSTs of any shipyard, with 171 constructed at Evansville, Indiana. [14] Chicago Bridge and Iron's shipyard in Seneca, Illinois, launched 156 ships and was specifically chosen because of their reputation and skills, particularly in welding. The American Bridge Company in Ambridge, Pennsylvania, built 119.

Modifications

By 1943, the construction time for an LST had been reduced to four months. By the end of the war, this had been cut to two months. Considerable effort was expended to hold the ship's design constant, but, by mid-1943, operating experience led to the incorporation of certain changes in the new ships.

From LST-513, the elevator to transfer equipment between the tank deck and the main deck was replaced with a 12 by 32 ft (3.7 by 9.8 m) ramp that was hinged at the main deck. This allowed vehicles to be driven directly from the main deck down to the tank deck and then across the bow ramp to the beach or causeway, speeding the process of disembarkation. [15]

Changes in the later LST-542 class included the addition of a navigation bridge; the installation of a water distillation plant with a capacity of 4,000 imperial gallons (18,000 L) per day; [16] the removal of the tank deck ventilator tubes from the center section of the main deck; the strengthening of the main deck in order to carry a smaller Landing Craft Tank (LCT); and an upgrade in armor and armament, with the addition of a 3"/50 caliber gun.

LST Mk.3

Lst (3) 3035 FL7209.jpg
HMS LST-3035
Class overview
NameLST (3)
Builders R & W. Hawthorn, Leslie & Co. Ltd, Harland and Wolff, Swan, Hunter & Wigham Richardson Ltd, Vickers-Armstrongs
Operators
Planned119
Completed
  • UK:
  • 31 × LST (3)
  • 2 × LST (C)
  • 2 × LST (Q)
  • Canada:
  • 26 × LST (3)
Cancelled40 + 6 scrapped before completion
Active0
Preserved0
General characteristics
Displacement
  • 2,140 tons light
  • 4,980 long tons (5,060 t) full load
Length347 ft (106 m) o/a
Beam55 ft 2 in (16.81 m)
Draught
  • Loaded :
  • 4 ft 7 in (1.40 m) bow
  • 11 ft 6 in (3.51 m) stern
Ramps23 feet by 14 feet ramp
PropulsionTwin screws, steam reciprocating engines, 5,500 hp (4,100 kW), 10 ft (3.0 m) propeller
Speed13 knots (24 km/h; 15 mph)
Capacity10 tanks plus 15 vehicles
Troops13 officers and 150 men
Complement14 officers and 90 men
Armament8 × 20 mm Oerlikon for A/A defence on some ships

Design

The LST (2) design was successful and production extensive, but there was still a need for more LSTs for British operations. As such, it was decided to build a further 80 of the ships in the UK and Canada to be available in the spring of 1945.

The British Staff drew up their own specification, requiring that the ship:

Two major problems made a redesign necessary. The preferred light weight medium-speed (locomotive type) Electro-Motive Diesel 12-567 diesel engines were not immediately available. Staff wanted more power and higher speeds if possible, which the EMD engines could have provided. However, the only engines available were very heavy steam reciprocating engines from frigates that had been cancelled. These delivered two and a half times the power of the diesels. So large were they that significant changes had to be made to accommodate them. Lack of welded construction facilities meant that the hull had to be riveted. This combination of heavy hull and heavy engines meant that speed was only 3 knots (5.6 km/h) faster than the LCT (2).

At the same time, other improvements were made—as well as simplifications required so most of the structure could be assembled with rivets. The cutaway hard chine that had been dropped in the American version of the Mark 2 vessels was restored. The tank deck, which was above the waterline, was made parallel to the keel, there was to be no round down to the upper deck, and the ship was enlarged to accommodate the more bulky machinery.

Provision was made for carrying the British Landing Craft Assault (LCA) in gravity davits, instead of American assault craft. Provision was also made for carrying Landing Craft Tank (LCT) and Landing Craft Mechanized (LCM), and NL pontoon causeways.

When the design commenced, engineers knew that the beaches where the ships were expected to land would be very flat, but it was not possible to produce a satisfactory vessel with a 3 ft (0.91 m) draught forward, and very little keel slope, so the 1 in 50 keel slope was maintained. It was known that the 1:50 slope would often result in the LST grounding aft on a shallow beach, resulting in the vehicles being discharged into comparatively deep water.

Various methods had been investigated to overcome the problem, but heavy grounding skegs and the N.L. pontoon causeways were finally accepted as standard; the pontoon causeways were formed of pontoons 7 ft (2.1 m) × 5 ft × 5 ft (1.5 m), made up into strings and rafts. When offloading, the rafts were secured to the fore end of the ship, and the load discharged directly onto the shore, or towed on the raft to the shore.

The ships were fitted out for service in both very cold and tropical conditions. The accommodation provided for both crew and army personnel was greatly improved compared with LST (2). The main hazard, apart from enemy action, was fire on the tank deck. Fire sprinklers were provided, but the water drenching system installed in later American vessels could not be provided.

The bow door arrangements were similar to the LST (2), but the design arranged the bow ramp in two parts in an attempt to increase the number of beaches where direct discharge would be possible. The machinery for operating the bow doors and ramp were electrical, but otherwise, steam auxiliaries replaced the electrical gear on the LST (2).

The general arrangements of the tank deck were similar, but the design increased headroom and added a ramp to the top deck, as in later LST (2)s. Provision was made for carrying LCA on gravity davits instead of the American built assault boats. The arrangements were generally an improvement over the LST (2), but suffered from a deeper draught, and, to some extent, from the haste of construction.

The first orders were placed in December 1943 with British builders, and 35 with Canadian builders. Swan Hunter delivered the first ships in December 1944. During 1944, follow up orders were placed in Canada for a further 36. These programmes were in full swing when the war ended, but not all vessels were completed.

The ships were numbered numbers LST-3001 to LST-3045 and LST-3501 to LST-3534. LST−3535 and later were cancelled.

Fifteen 40-ton tanks or 27 25-ton tanks could be carried on the tank deck with an additional fourteen lorries on the weather deck. [8]

Propulsion

Steam was supplied by a pair of Admiralty pattern 3-drum water-tube type boilers, working at 225 pounds per square inch (1,550 kPa). The main engines were of the 4-cylinder triple expansion 4-crank type, balanced on the Yarrow-Tweedy-Slick system, the cylinders being as follows:

High pressure18.5 in diameter
Medium pressure31.0 in diameter
Forward low pressure38.5 in diameter
Aft low pressure38.5 in diameter

The common stroke was 30 inches (760 mm). The piston and slide valve rods were all fitted with metallic packing to the stuffing boxes, and all pistons fitted with packing rings and springs. The high-pressure valve was of the piston type, whilst the remaining ones were of the balanced type. The main engines were designed to develop 2,750 hp (2,050 kW) at 185 rpm continuously.

With the ships being twin screw, the engines were fitted with a shaft coupling to the crank shaft at the forward end, allowing the engine to be turned end to end to suit either port or starboard side fitting.

Modifications for landing craft

When the LST (3)s were ordered, the LST (2) programme was in full swing, and similar arrangements were made to enable the LSTs to carry the 112 feet (34 m) long LCT5 or LCT6 that were being built in America for the Royal Navy.

The LCT needed lifting onto the deck of the ship, being carried on wedge-shaped support blocks; at the time of launching she was set down on the "launch ways" by simply slacking off bolts in the wedge blocks, allowing the launch way to take the weight. To carry out a launch, the LST was simply heeled over about 11 degrees by careful flooding of tanks in the hull. The height of the drop was about 10 ft (3.0 m), and immediately after the launch the craft's engines were started and they were ready for operation.

This method was used for moving LCT5s from Britain to the Far East, although there seems to be no reference to LST (3)s being used, most being completed late in or after the war.

Even at the end of the war there was a need for more ships able to carry minor landing craft, and two of the LST (3)s then completing were specially fitted to carry LCM (7). These craft, which were 58 ft (18 m) long and weighed about 28 tons, were carried transversely on the upper deck of the ship. They were hoisted on by means of a specially fitted 30-ton derrick; This 30-ton derrick replaced a 15-ton derrick, two of which were the standard fit of the LST (3). The 30-ton derrick was taller and generally more substantial than the 15 ton one.

The LCM (7)s were landed on trolleys fitted with hydraulic jacks. These ran on rails down each side of the deck, and were hauled to and fro by means of winches. The stowage was filled from fore to aft as each craft was jacked down onto fixed cradles between the rails. The ships completed to this standard were LST-3043/HMS Messina, and LST-3044/HMS Narvik. While these ships were able to carry LCMs, they were only able to carry out loading and unloading operations under nearly ideal weather conditions, and therefore could not be used for assault operations; they also lacked the facilities to maintain the landing craft (which the Dock Landing Ships provided).

The Landing Craft Assault were wooden-hulled vessels plated with armour, 41 ft 6 in (12.65 m) long overall, 10 ft (3.0 m) wide, and displacing 13 tons fully loaded. Draught was 2 ft 3 in (0.69 m), and normal load was 35 troops with 800 lb (360 kg) of equipment. A pair of Scripps marine conversions of Ford V8 engines gave it speeds of 11 knots (20 km/h) unloaded, 8 knots (15 km/h) service speed, 3 knots (5.6 km/h) on one engine. Range was 50–80 miles (80–130 km) miles on 64 imperial gallons (290 L). Armament was typically a Bren light machine gun aft; with two Lewis Guns in a port forward position.

The LCM (7)s that were carried on the LST (2) were considerably larger, 60 ft 3 in (18.36 m) in length, 16 ft (4.9 m) beam, with a hoisting weight of 28 tons, full load displacement of 63 tons. Beaching draught was 3 ft 8 in (1.12 m), and propulsion was provided by a pair of Hudson Invader petrol engines, later replaced with Grays diesels, both sets providing 290 bhp (220 kW), giving a speed of 9.8 knots (18.1 km/h).

The main requirement of the design was to carry a 40-ton Churchill tank or bulldozer at 10 knots (19 km/h). 140 had been completed when the war ended, and some saw service through to the 1970s.

Variants

Some LST (3)s were converted to LST (A) (A for "assault") by adding stiffening so they could safely carry the heaviest British tanks.

Two LST (3)s were converted to command vessels, LST (C): LST 3043 and LST 3044. Post war they became HMS Messina (L112) and HMS Narvik (L114). They were better armed with ten 20 mm Oerlikons and four 40 mm Bofors.

Two LST (3)s were converted during building into Headquarters command ships LST (Q). These were L3012, which became L3101 (and later HMS Ben Nevis) and LST 3013, which became LST 3102, and then HMS Ben Lomond. They acted as LST "mother ships", similar in most aspects to American ships based on the LST (2) hull. They had two Quonset huts erected on the main deck to accommodate 40 officers. Berths on the tank deck berthed an extra 196 men. A bake shop and 16 refrigeration boxes for fresh provisions augmented the facilities normally provided for the crew. Four extra distilling units were added, and the ballast tanks were converted for the storage of fresh water.

Service in World War II

U.S. LSTs carrying the Australian 26th Brigade from Morotai Island to Tarakan Island in April 1945 LST Morotai.jpg
U.S. LSTs carrying the Australian 26th Brigade from Morotai Island to Tarakan Island in April 1945

At the Armor Training School in Ft. Knox, Kentucky, buildings were erected as exact mock-ups of an LST. Tank crews in training learned how to maneuver their vehicles onto, in and from an LST with these facilities. One of these buildings has been preserved at Ft. Knox for historic reasons and can still be seen.

From their combat début in the Solomon Islands in June 1943 until the end of the hostilities in August 1945, the LSTs performed a vital service in World War II. They participated in the invasions of Sicily (Operation Husky), Italy, Normandy, and southern France in the European Theater and were an essential element in the island-hopping campaigns in the Pacific that culminated in the liberation of the Philippines and the capture of Iwo Jima and Okinawa.

Despite the large numbers produced, LSTs were a scarce commodity and Churchill describes the difficulty in retaining sufficient LSTs in the Mediterranean for amphibious work in Italy, and later the logistics of moving large numbers to the eastern theatres, while still supplying the large armies in Europe.

The LST proved to be a remarkably versatile ship. Thirty-nine of them were converted to become landing craft repair ships (ARL). In this design, the bow ramp and doors were removed, and the bow was sealed. Derricks, booms, and winches were added to haul damaged landing craft on board for repairs, and blacksmith, machine, and electrical workshops were provided on the main deck and tank deck.

Thirty-six LSTs were converted to serve as small hospital ships and designated LSTH. They supplemented the many standard LSTs, which removed casualties from the beach after landing tanks and vehicles. LSTs had brought 41,035 wounded men back across the English Channel from Normandy by D-Day+114 (28 September 1944). [17] Other LSTs, provided with extra cranes and handling gear, were used exclusively for replenishing ammunition. They possessed a special advantage in this role, as their size permitted two or three LSTs to go simultaneously alongside an anchored battleship or cruiser to accomplish replenishment more rapidly than standard ammunition ships.

USS LST-906, with US Army Air Force L-4 Grasshopper on her flight deck being prepared for take-off. Note additional L-4 type aircraft stowed alongside the deck. LST Aircraft Carrier.jpg
USS LST-906, with US Army Air Force L-4 Grasshopper on her flight deck being prepared for take-off. Note additional L-4 type aircraft stowed alongside the deck.

Three LST (2) were converted into British "Fighter Direction Tenders" (FDT), swapping their landing craft for Motor Launches [18] and outfitted with AMES Type 11 and Type 15 fighter control radar to provide Ground-controlled interception (GCI) coverage for air defence of the D-Day landing areas. Of these ships, HMS FDT 216 was stationed off Omaha and Utah beaches, HMS FDT 217 was allocated Sword, Juno, and Gold beaches. HMS FDT 13 was used for coverage of the overall main shipping channel. In the period 6 June to 26 June Allied fighters controlled by the FDTs resulted in the destruction of 52 enemy aircraft by day, and 24 enemy aircraft by night. [19]

USS LST-776 with Brodie system front view during testing 1943 USS LST-776 with Brodie system front view during testing 1943.jpg
USS LST-776 with Brodie system front view during testing 1943

In the latter stages of World War II, some LSTs were fitted with flight decks that could launch small observation planes during amphibious operations. [20] These were USS LST-16, USS LST-337, USS LST-386, USS LST-525, LST-776, and USS LST-906. Two others (USS LST-393 and USS LST-776) were fitted with the Brodie System for take off and landing.

It has been estimated that, in the combined fleets assembled for the war on Japan, the tonnage of landing ships, excluding landing craft, would have exceeded five million tons and nearly all built within four years.

Throughout the war, LSTs demonstrated a remarkable capacity to absorb punishment and survive. Despite the sobriquets "Large Slow Target" and "Large Stationary Target," which were applied to them by crew members, the LSTs suffered few losses in proportion to their number and the scope of their operations. Their brilliantly conceived structural arrangement provided unusual strength and buoyancy; HMS LST 3002 was struck and holed in a post-war collision with a Victory ship and survived. Although the LST was considered a valuable target by the enemy, only 26 were lost due to enemy action, and a mere 13 were the victims of weather, reef, or accident.

A total of 1,152 LSTs were contracted for in the great naval building program of World War II, but 101 were cancelled in the fall of 1942 because of shifting construction priorities. Of 1,051 actually constructed, 113 LSTs were transferred to Britain under the terms of Lend-Lease, and four more were turned over to the Greek Navy. Conversions to other ship types with different hull designations accounted for 116: 6 Miscellaneous Ships (AG), 14 Motor Torpedo Boat Tenders (AGP), 7 Self-Propelled Barracks Ships (APB), 13 Battle Damage Repair Ships (ARB), 39 Landing Craft Repair Ships (ARL), 3 Salvage Craft Tenders (ARST), 4 Aircraft Repair Ships (ARVA, ARVE), 1 Advance Aviation Base Ship (AVB), 4 Unclassified miscellaneous vessels (IX), and 36 LSTH. One LST which had been sunk in an accident was later raised and converted into a Covered Barge (YF).

Post-war developments

United States

USS Graham County (LST-1176) beached at Vieques, Puerto Rico in 1964 Graham County LST-1176.jpg
USS Graham County (LST-1176) beached at Vieques, Puerto Rico in 1964

The end of World War II left the Navy with a huge inventory of amphibious ships. Hundreds of these were scrapped or sunk, and most of the remaining ships were put in "mothballs" to be preserved for the future. Additionally, many of the LSTs were demilitarized and sold to the private sector, along with thousands of other transport ships, contributing to a major downturn in shipbuilding in the United States following the war. Many LSTs were used as targets in aquatic nuclear testing after the war, being readily available and serving no apparent military applications. World War II era LSTs have become somewhat ubiquitous, and have found a number of novel commercial uses, including operating as small freighters, ferries, and dredges. Consequently, construction of LSTs in the immediate post-war years was modest. LST-1153 and LST-1154, commissioned respectively in 1947 and 1949, were the only steam-driven LSTs ever built by the Navy. They provided improved berthing arrangements and a greater cargo capacity than their predecessors.

The success of the amphibious assault at Inchon during the Korean War showed the utility of LSTs once again. This was in contrast with the earlier opinion expressed by many military authorities that the advent of the atomic bomb had relegated amphibious landings to a thing of the past. During the Korean War a number of LSTs were converted to transport the much needed, but slow and short range LSU from the United States to the Korean theater of war using the piggy-back method. After arrival the LSU was slid off sideways from the LST. [21] Additionally, LSTs were used for transport in the building of an Air Force base at Thule, Greenland during the Korean War. Fifteen LSTs of what were later to be known as the Terrebonne Parish class were constructed in the early 1950s. These new LSTs were 56 feet (17 m) longer and were equipped with four, rather than two, diesel engines, which increased their speed to 15 knots (28 km/h; 17 mph). Three-inch / 50-caliber twin mounts replaced the old twin 40 mm guns, and controllable pitch propellers improved the ship's backing power. On 1 July 1955, county or, in the case of Louisiana, parish names were assigned to many LSTs, which up to then had borne only a letter-number hull designation.

In the late 1950s, seven LSTs of the De Soto County class were constructed. These were an improved version over earlier LSTs, with a high degree of habitability for the crew and embarked troops. Considered the "ultimate" design attainable with the traditional LST bow door configuration, they were capable of 17.5 knots (32.4 km/h; 20.1 mph).

United Kingdom

Commercial ferry use

In 1946, a brand new concept of transport was developed in the UK. During World War II, the great potential of landing ships and craft was recognised; if it was possible to drive tanks, guns and lorries directly onto a beach, then theoretically the same landing craft could be used to carry out a similar operation in the civilian commercial market, providing there were reasonable port facilities. From this idea grew the worldwide roll-on/roll-off ferry industry. In the period between the world wars, Lt. Colonel Frank Bustard formed the Atlantic Steam Navigation Company, with a view to cheap transatlantic travel. This never materialised, but he observed trials on Brighton Sands of a LST in 1943 when its peacetime capabilities were obvious.

In the spring of 1946, the company approached the Admiralty with a request to purchase three of these vessels. The Admiralty was unwilling to sell, but after negotiations agreed to let the ASN have the use of three vessels on bareboat charter at a rate of £13 6s 8d per day. These vessels were LSTs 3519, 3534, and 3512. They were renamed Empire Baltic , Empire Cedric, and Empire Celtic, perpetuating the name of White Star Line ships in combination with the "Empire" ship naming of vessels in government service during the war.

The chartered vessels had to be adapted for their new role. First the accommodation on board had to be improved, and alterations in the engine and boiler rooms had also to be made. Modified funnels and navigational aids needed to be provided before they could enter service. On the morning of 11 September 1946, the first voyage of the Atlantic Steam Navigation Company took place when Empire Baltic sailed from Tilbury to Rotterdam with a full load of 64 vehicles for the Dutch government. On arrival at Waalhaven, the vessel beached using the method employed during wartime landings, being held by a stern anchor. The vessel stayed on the beach overnight, returning at 08:00 the next morning. This leisurely pace of work was followed for the first few voyages, the beach being employed possibly because normal port facilities were unavailable due to wartime damage. Following the initial Rotterdam voyage, ASN used their new vessels to transfer thousands of vehicles for the British Army from Tilbury to Hamburg, and later to Antwerp in 1955.

The original three LSTs were joined in 1948 by another vessel, LST 3041, renamed Empire Doric, after the ASN were able to convince commercial operators to support the new route between Preston Dock in Lancashire and the Northern Ireland port of Larne. Originally Liverpool was chosen, but opposition from other operators led to a move to Lancashire. However, special port facilities had to be constructed at both Preston and Larne before the new route could be opened – a wartime end-loading ramp built by engineers during World War II at Preston, and a floating pontoon from a Mulberry harbour connected via a bridge to the quay at Larne.

The first sailing of this new route was on 21 May 1948 by Empire Cedric. After the inaugural sailing, Empire Cedric continued on the Northern Ireland service, offering initially a twice-weekly service. Empire Cedric was the first vessel of the ASN fleet to hold a Passenger Certificate, and was allowed to carry fifty passengers. Thus Empire Cedric became the first vessel in the world to operate as a commercial/passenger roll-on/roll-off ferry, and the ASN became the first company to offer this type of service.

Some of the first cargo on this service were two lorry-loads of 65 gas cookers each on behalf of Moffats of Blackburn, believed to be the first commercial vehicles carried in this way as freight. The Preston–Larne service continued to expand, so much so that in 1950 it added a route to Belfast. This service opened in 1950, and sailings out of Preston were soon increased to six or seven a week to either Belfast or Larne.

In 1954, the British Transport Commission (BTC) took over the ASN under the Labour government's nationalization policy. In 1955, another two LSTs were chartered into the existing fleet, Empire Cymric and Empire Nordic, bringing the fleet strength to seven. The Hamburg service was terminated in 1955, and a new service was opened between Antwerp and Tilbury. The fleet of seven ships was to be split up, with the usual three ships based at Tilbury and the others maintaining the Preston to Northern Ireland service.

During late 1956, the entire fleet of ASN was taken over for use in the Mediterranean during the Suez Crisis, and the drive on/drive off services were not re-established until January 1957. At this point ASN were made responsible for the management of twelve Admiralty LST (3)s brought out of reserve as a result of the Suez Crisis, though too late to see service.

Army service

A major task at the end of World War II was the redistribution of stores and equipment worldwide. Due to the scarcity and expense of merchant shipping it was decided in 1946 that the Royal Army Service Corps civilian fleet should take over seven LSTs from the Royal Navy. These were named after distinguished corps officers: Evan Gibb, Charles Macleod, Maxwell Brander, Snowden Smith, Humfrey Gale, Reginald Kerr, and Fredrick Glover.

The LSTs needed to comply with Board of Trade regulations, and to be brought up to merchant navy standards, which involved lengthy alterations including extra accommodation. On completion, five vessels sailed for the Middle East, and two for the Far East.

During the evacuation of Mandatory Palestine, Humfrey Gale and Evan Gibb made fifteen voyages each between Haifa and Port Said lifting between them 26,000 tons of vehicles and stores.

Similar work was done worldwide until 1952 when the ships were handed over to the Atlantic Steam Navigation Company, and subsequently in 1961 to the British-India Steam Navigation Company, tasked by the War Office directly, RASC having no further concern with their administration.

Aviation training

The rapid increase in the use of helicopters in the Royal Navy in the late 1950s and 1960s required an increase in the training and support facilities ashore and afloat. Operational training for aircrew was carried out by naval air stations at Portland and Culdrose. The scrapping of some carriers and conversion of others to commando carriers in the mid-1950s left a shortage of suitable decks. This led to the ordering of RFA Engadine in 1964; however she would not be available till 1967. In the meantime it was decided to convert LST 3027 to serve as an interim training ship.

This work was carried out at Devonport Dockyard in 1964. The deck forward of the cargo hatch was cleared of all obstructions, and strengthened for helicopter use. A small deckhouse used to support the gun emplacements was retained, although no guns were fitted, and it was used by the Flight Deck Officer as a helicopter control position. Below deck, two 10,000-imperial-gallon (45,000 L) aviation fuel tanks were installed at the fore end of the tank deck, and refuelling positions provided at the fore end of the flight deck. The tanks were sealed off by a bulkhead and the rest of the space used for stores, workshops and accommodation. Finally the bow doors were sealed, as they would no longer be needed. The flight deck was large enough for two Westland Wessex helicopters with rotors turning, or six could be parked with rotors folded. Renamed HMS Lofoten she proved extremely useful in service, and many lessons were learned that would be incorporated into Engadine.

Notable incidents

World War II

Post-war

World War II survivors

Indonesia

Philippines

The Philippine Navy received 20+ units of the LST Mk.2 starting in the late 1940s. This includes BRP Laguna (LT-501), ex-USS LST-230 and BRP Benguet (LT-507), ex-USS Daviess County (LST-692).[ citation needed ] The BRP Sierra Madre (LT-57), ex-USS Harnett County (LST-821) permanently beached on the Second Thomas Shoal. The ship serves as an advance outpost, and is currently at the center of a territorial dispute between China and the Philippines. [53] [54]

Singapore

RSS Resolution (L-204), ex-USS LST-649, is operated by the Republic of Singapore Navy as a training ship at Tuas Naval Base, Singapore. She was one of the five landing ships bought by Singapore on 5 December 1975 which consists of USS LST-836, USS LST-649, USS LST-629, USS LST-579 and USS LST-613.

South Korea

USS LST-849 was commissioned in 1945 and was an active ship until 2006. She served in the Okinawa campaign in May–June 1945 and earned one battle star for her service in World War II. She was transferred to the Republic of Korea Navy in 1958, commissioned as ROKS Wi Bong (LST-676), and served there until 2006. She was used to transport thousands of soldiers and their equipment from South Korea to South Vietnam during the Vietnam War. In 2007, she was decommissioned and sold to the city of Gunsan, South Korea for display in a maritime museum in a deal with the navy. [55]

Taiwan

ROCS Chung Yeh (LST-231) ROCS Chung Yeh (LST-231).jpg
ROCS Chung Yeh (LST-231)

The Republic of China Navy Currently Operates 4 LST-542 Class vessels, as well as decommissioning 2 others as of recent.

ROCS Chung Chien (LST-205) ROCS Chung Chien (LST-205).jpg
ROCS Chung Chien (LST-205)
ROCS Chung Chie (LST-218) ROC Chung Chie (LST-218).jpg
ROCS Chung Chie (LST-218)

Thailand

Vietnam

Tran Khanh Du (HQ-501), ex-USS Maricopa County (LST-938), had been transferred to the Republic of Vietnam Navy, and after the Fall of Saigon was captured by North Vietnamese forces. As of 2003, she is active and in commission with the Vietnamese People's Navy.

United States

Modern developments

USS Frederick at sea. The Newport-class ships can debark amphibious vehicles from stern gates or the bow ramp. USS Frederick;1016118402.jpg
USS Frederick at sea. The Newport-class ships can debark amphibious vehicles from stern gates or the bow ramp.

The commissioning of the Newportclass in 1969 marked the introduction of an entirely new concept in the design of LSTs. She was the first of a new class of 20 LSTs capable of steaming at a sustained speed of 20 knots (37 km/h). To obtain that speed, the traditional blunt bow doors of the LST were replaced by a pointed ship bow. Unloading is accomplished through the use of a 112-foot (34 m) ramp operated over the bow (similar in concept to the original HMS Boxer) and supported by twin derrick arms. A stern gate to the tank deck permits unloading of LVTs into the water or the unloading of other vehicles into a landing craft utility (LCU) or onto a pier. Capable of operating with high-speed amphibious squadrons consisting of LHAs, LPDs, and LSDs, the Newport-class LST can transport tanks, other heavy vehicles, and engineering equipment that cannot readily be landed by helicopters or landing craft. The Newport type were removed U.S. Navy service in the 1990s, and Spanish Navy, Chile, Australia, and Malaysia but serves on in the navies of Brazil, Mexico, Morocco, Taiwan, in a modified form and soon with Peru.

Elsewhere, over 100 Polish Polnocny-classlanding ships were produced from 1967 to 2002. The Indian Navy maintains a fleet of seven Polnocny-class LSTs and LCUs known collectively as the Kumbhirclass. [59] [60]

Operators

Former operators

Cultural references

Literature

Jonah's Cathedral by R. D. Wall, is a novel of the Vietnam War based on the author's experiences while serving on an LST in the Mekong Delta in 1966. The book, #1 in the Jonah Wynchester Series, follows the exploits of U.S. Navy Gunner's Mate Jonah Wynchester from the time he reports aboard his new assignment, the LST USS Winchester County, at the Navy Amphibious Base in Little Creek, Virginia on New Year's Day 1966 through the time the ship departs for Vietnam. The "Cathedral" refers to the nickname the crew have given the ship, a decrepit, run-down LST in the ready reserve fleet, that is suddenly re-activated and fully manned for the rapidly expanding need for LSTs in the Vietnam theater. Book #2, "Mekong Covenant" follows the ship across the Pacific into the deadly brown waters of the Mekong Delta.

The Ninety and Nine by William Brinkley, author of Don't Go Near the Water , portrays an LST running supplies to Anzio during World War II. The title refers to the ship's company of ninety enlisted men and nine officers. The book opens with a quotation attributed to Winston Churchill – "The destinies of two great empires ... seemed to be tied by some god-damned things called LST's."

In the biography Man In Motion: Michigan's Legendary Senate Majority Leader, Emil Lockwood by Stanley C. Fedewa and Marilyn H. Fedewa, Lockwood colorfully describes his World War II service aboard LST-478. "We were always in the thick of it," Emil said, "because it was our job on the LSTs to carry personnel-operated tanks, artillery, supplies—anything, you name it—into the heart of a war zone." [61]

The novel Warm Bodies by Donald R. Morris portrays life on an LST in the 1950s. The title refers to the use of any available body in port during overhaul for any duty necessary. "A Warm Body is man with at least one arm and two fingers who can pick up something when he is told to." Although a work of fiction, the novel is based on Morris' experience as an officer aboard an LST. [62]

See also

Related Research Articles

<span class="mw-page-title-main">Landing craft</span> Seagoing watercraft

Landing craft are small and medium seagoing watercraft, such as boats and barges, used to convey a landing force from the sea to the shore during an amphibious assault. The term excludes landing ships, which are larger. Production of landing craft peaked during World War II, with a significant number of different designs produced in large quantities by the United Kingdom and United States.

Landing craft tank Amphibious assault craft for landing tanks on beachheads

The Landing Craft, Tank (LCT) was an amphibious assault craft for landing tanks on beachheads. They were initially developed by the Royal Navy and later by the United States Navy during World War II in a series of versions. Initially known as the "tank landing craft" (TLC) by the British, they later adopted the U.S. nomenclature "landing craft, tank" (LCT). The United States continued to build LCTs post-war, and used them under different designations in the Korean and Vietnam Wars.

USS <i>LST-512</i>

USS Burnett County (LST-512) was an LST-491-class tank landing ship built for the United States Navy during World War II. Named for Burnett County, Wisconsin, she was the only U.S. Naval vessel to bear the name.

USS <i>Barbour County</i> Newport-class tank landing ship

USS Barbour County (LST-1195) was the seventeenth ship of the twenty Newport-class tank landing ships of the United States Navy (USN) which replaced the traditional bow door-design tank landing ships (LSTs). The vessel was named after two counties; one in Alabama, and the other in West Virginia. The LST was constructed by National Steel and Shipbuilding Company of San Diego, California. Barbour County was launched in 1971 and commissioned into the USN in 1972. Barbour County took part in the Vietnam War, including the evacuation of Saigon and the Gulf War. The LST also performed disaster relief in Bangladesh. The vessel was decommissioned in 1992 and laid up with plans to sell the ship. This did not happen and the vessel was struck from the Naval Vessel Register in 2001 and sunk as a target ship in 2004.

USS <i>Calhoun County</i> (LST-519) US Navy tank landing ship

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USS <i>LST-494</i>

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USS <i>LST-31</i> Tank landing ship of the United States Navy

USS LST-31 was a United States Navy LST-1-class tank landing ship used exclusively in the Asiatic-Pacific Theater during World War II. Like many of her class, she was not originally named and is properly referred to by her hull designation. Later she was named for Addison County, Vermont. She was the only US Naval vessel to bear the name.

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USS <i>Bamberg County</i>

USS LST-209 was an LST-1-class tank landing ship built for the United States Navy during World War II. Like most of the ships of her class, she was not originally named, and known only by her designation. From June to August 1951 she served a stint as a part of the Military Sea Transportation Service (MSTS), manned by a civilian crew, and renamed USNS T-LST-209. She was recommissioned under her original name 24 August 1951, and renamed USS Bamberg County (LST-209) on 1 July 1955. She was named for Bamberg County, South Carolina, the only U.S. Naval vessel to bear the name.

USS <i>LST-389</i>

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USS <i>Phaon</i> (ARB-3)

USS Phaon (ARB-3) was planned as a United States Navy LST-1-class tank landing ship, but was redesignated as one of twelve Aristaeus-class battle damage repair ships built for the United States Navy during World War II. Named for Phaon, she was the only US Naval vessel to bear the name.

USS <i>Myrmidon</i> (ARL-16)

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USS <i>Middlesex County</i> (LST-983)

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USS <i>Maricopa County</i> (LST-938) Tank landing ship of the US Navy

USS Maricopa County (LST-938) was an LST-542-class tank landing ship built for the United States Navy during World War II. Like many of her class, she was not named and is properly referred to by her hull designation. She was later named after Maricopa County, Arizona, she was the only US Naval vessel to bear the name.

USS <i>LST-19</i>

USS LST-19 was a United States Navy LST-1-class tank landing ship used exclusively in the Asiatic-Pacific Theater during World War II and manned by a United States Coast Guard crew. Like many of her class, she was not named and is properly referred to by her hull designation.

<span class="mw-page-title-main">Amphibious warfare ship</span> Ship used in amphibious warfare

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Bibliography

This article incorporates text from the public domain Dictionary of American Naval Fighting Ships .