The Luftwaffe's rescue buoy (Rettungsboje) was designed to provide shelter for the pilots or crew of aircraft shot down or forced to make an emergency landing over water.
The Luftwaffe's rescue buoy (Rettungsboje) was designed to provide shelter for the pilots or crew of aircraft shot down or forced to make an emergency landing over water.
The buoys were developed for flyers of the Luftwaffe brought down while operating over the English Channel during the Battle of Britain, and were constructed under the direction of the German Ministry of Air Navigation in 1940 at the suggestion of Generaloberst Ernst Udet, Director-General of Equipment for the Luftwaffe. Because of this, an alternate name for them was the Udet-Boje.
The initial buoys were a simple design, 2 m (6 ft 7 in) high, and 1 m × 5 m (3 ft 3 in × 16 ft 5 in) in size, offering little in the form of shelter. A flag pole allowed a flag or lamp to be hoisted, supplies included a basic medical kit, iron rations, water, life jackets and ropes. [1] : 91
An improved buoy was designed and 50 were anchored in the English Channel during 1940. [1] : 93
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The buoys were of square or hexagonal construction and had a floor space of about 4m² (43 square feet) with an 2.4m (8 feet) tall cabin rising above the float. On the upper deck of this cabin, there was an oval turret 1.8m (6 feet) high with a signal mast carrying a wireless antenna. Tube railings to which the distressed flyers could cling ran along the outer circumference below and above the water line. A ladder led up to the turret, in which there was a door opening into the cabin below. A 100m (320 feet) red and yellow striped rope anchored the buoy at a fixed location, but allowed a limited drift, thereby indicating the direction of the current to aircraft in distress. The buoy was painted light yellow above the water line, and red crosses against white oval backgrounds were painted on each side of the turret.
The cabin accommodated four persons comfortably for several days, and in an emergency, the crews of several aircraft could be taken care of. It was electrically lit by storage batteries, but in case of a breakdown kerosene lamps or other lighting devices were provided. There were two double-deck beds and adequate cupboard space for first-aid equipment, dry clothing and shoes, emergency rations, and a water supply. Hot food could be prepared on an alcohol stove. Cognac to relieve chill and cigarettes to quiet the nerves were also provided. Games, stationery, playing cards, etc. afforded diversion until rescue was effected. Depleted supplies were always immediately replaced upon the arrival of the rescue ship. A tubular lifeboat was available for transferring the downed aviators from the buoy to the ship. Signalling was accomplished by hoisting a black anchor ball and a yellow and red striped flag on the mast during the day. At night, red and white lights in the turret indicated that rescued men were on board. A white anchor light on the mast was visible for 1km (3,000 feet) or more. SOS signals giving the location of the buoy were automatically sent out by an emergency wireless transmitter. Signal pistols with red and white lights, white-light parachute flares, or a smoke, distress-signalling apparatus completed the signalling equipment. Other equipment included plugs to stop up bullet holes in the walls of the cabin and a pump for the expulsion of seepage.
— US War Department, Tactical and Technical Trends, No. 12, November 19, 1942 [2]
Being in fixed locations, they could be checked once or twice a day: if occupied, a seaplane or Flugsicherungboot (high speed launch) could be summoned. [1] : 92
They saved many airmen that ships or seaplanes might have been too late to rescue. [1] : 93
 Air Sea Rescue Float, ASR-10, displayed at the Scottish Maritime Museum at Irvine, 2013 | |
| General characteristics | |
|---|---|
| Length | 32 ft (9.8 m) |
| Beam | 10 ft (3.0 m) |
| Draught | 3 ft 3 in (1.0 m) |
| Depth | 6 ft (1.8 m) |
A British equivalent, the Air-Sea Rescue Float was also developed and deployed. [3] They used a boat-shaped hull of welded steel. Sixteen were constructed, [4] and they were deployed under the main routes bombers took to and from continental Europe. [5] They were equipped with cooking facilities, signal flags, a radio and six bunks. Food, blankets, clothing, drinking water and first-aid supplies were carried. [5]
One example - ASR-10 is in the collection of the Scottish Maritime Museum. Its post-war career is unknown, but for many years it lay derelict on a slipway at Gourock, Scotland, before it was acquired by the museum. [6]
A rescue buoy was incorporated into the harbour boom at Braye Harbour in German-occupied Alderney, reputedly manned by three men armed with a machine gun. [1] : 95
Rettungsbojen have appeared in films from the World War II period: One of Our Aircraft Is Missing (1942) and We Dive at Dawn (1943).
An emergency position-indicating radiobeacon (EPIRB) is a type of emergency locator beacon for commercial and recreational boats, a portable, battery-powered radio transmitter used in emergencies to locate boaters in distress and in need of immediate rescue. In the event of an emergency, such as a ship sinking or medical emergency onboard, the transmitter is activated and begins transmitting a continuous 406 MHz distress radio signal, which is used by search-and-rescue teams to quickly locate the emergency and render aid. The signal is detected by satellites operated by an international consortium of rescue services, COSPAS-SARSAT, which can detect emergency beacons anywhere on Earth transmitting on the distress frequency of 406 MHz. The satellites calculate the position or utilize the GPS coordinates of the beacon and quickly passes the information to the appropriate local first responder organization, which performs the search and rescue. As Search and Rescue approach the search areas, they use Direction Finding (DF) equipment to locate the beacon using the 121.5 MHz homing signal, or in newer EPIRBs, the AIS location signal. The basic purpose of this system is to help rescuers find survivors within the so-called "golden day" during which the majority of survivors can usually be saved. The feature distinguishing a modern EPIRB, often called GPIRB, from other types of emergency beacon is that it contains a GPS receiver and broadcasts its position, usually accurate within 100 m (330 ft), to facilitate location. Previous emergency beacons without a GPS can only be localized to within 2 km (1.2 mi) by the COSPAS satellites and relied heavily upon the 121.5 MHz homing signal to pin-point the beacons location as they arrived on scene.
A buoy is a floating device that can have many purposes. It can be anchored (stationary) or allowed to drift with ocean currents.
A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a sound audible from a distance.
Rescue comprises responsive operations that usually involve the saving of life, removal from danger, liberation from restraint, or the urgent treatment of injuries after an incident. It may be facilitated by a range of tools and equipment necessary to deal with the specific circumstances.
A surface marker buoy, SMB, dive float or simply a blob is a buoy used by scuba divers, at the end of a line from the diver, intended to indicate the diver's position to people at the surface while the diver is underwater. Two kinds are used; one (SMB) is towed for the whole dive, and indicates the position of the dive group throughout the dive, and the other, a delayed surface marker buoy, DSMB or decompression buoy, is deployed towards the end of the dive as a signal to the surface that the divers have started to ascend, and where they are going to surface. Both types can also function as a depth reference for controlling speed of ascent and accurately maintaining depth at decompression stops. Surface marker buoys are also used by freedivers in open water, to indicate the approximate position of the diver when submerged. They may also be used to support a catch bag or fish stringer by underwater hunters and collectors. A DSMB is considered by recreational scuba divers and service providers to be a highly important item of safety equipment, yet its use is not part of the entry level recreational diver training for all training agencies, and there are significant hazards associated with incompetent use.
Diver communications are the methods used by divers to communicate with each other or with surface members of the dive team. In professional diving, diver communication is usually between a single working diver and the diving supervisor at the surface control point. This is considered important both for managing the diving work, and as a safety measure for monitoring the condition of the diver. The traditional method of communication was by line signals, but this has been superseded by voice communication, and line signals are now used in emergencies when voice communications have failed. Surface supplied divers often carry a closed circuit video camera on the helmet which allows the surface team to see what the diver is doing and to be involved in inspection tasks. This can also be used to transmit hand signals to the surface if voice communications fails. Underwater slates may be used to write text messages which can be shown to other divers, and there are some dive computers which allow a limited number of pre-programmed text messages to be sent through-water to other divers or surface personnel with compatible equipment.
This glossary of nautical terms is an alphabetical listing of terms and expressions connected with ships, shipping, seamanship and navigation on water. Some remain current, while many date from the 17th to 19th centuries. The word nautical derives from the Latin nauticus, from Greek nautikos, from nautēs: "sailor", from naus: "ship".
USS Grapple (ARS-53) is a Safeguard-class rescue and salvage ship in the United States Navy. Her home port is Norfolk, Virginia. On 13 July 2006 Grapple was decommissioned from US Navy service and converted to civilian operation by Military Sealift Command. She was redesignated as USNS Grapple.
Canoe diving and Kayak diving are recreational diving where the divers paddle to a diving site in a canoe or kayak carrying all their gear in or on the boat to the place they want to dive. Canoe or kayak diving gives the diver independence from dive boat operators, while allowing dives at sites which are too far to comfortably swim, but are sufficiently sheltered.
A breeches buoy is a rope-based rescue device used to extract people from wrecked vessels, or to transfer people from one place to another in situations of danger. The device resembles a round emergency personal flotation device with a leg harness attached. It is similar to a zip line. The breeches buoy may be deployed from shore to ship, ship to ship, or ship to shore using a Manby mortar, rocket, kite system, or a Lyle gun, and allows evacuation of one person at a time. A line is attached to the ship, and the person being rescued is pulled to shore in the breeches buoy.
Air-sea rescue, and aeronautical and maritime search and rescue (AMSAR) by the ICAO and IMO, is the coordinated search and rescue (SAR) of the survivors of emergency water landings as well as people who have survived the loss of their seagoing vessel. ASR can involve a wide variety of resources including seaplanes, helicopters, submarines, rescue boats and ships. Specialized equipment and techniques have been developed. Both military and civilian units can perform air-sea rescue. Its principles are laid out in the International Aeronautical and Maritime Search and Rescue Manual. The International Convention on Maritime Search and Rescue is the legal framework that applies to international air-sea rescue.
In navigation, a radio beacon or radiobeacon is a kind of beacon, a device that marks a fixed location and allows direction-finding equipment to find relative bearing. But instead of employing visible light, radio beacons transmit electromagnetic radiation in the radio wave band. They are used for direction-finding systems on ships, aircraft and vehicles.
A Lyle gun was a line thrower powered by a short-barrelled cannon. It was invented by Captain David A. Lyle, US Army, a graduate of West Point and the Massachusetts Institute of Technology, and was used from the late 19th century to 1952, when it was replaced by rockets for throwing lines.
A rescue buoy or rescue tube or torpedo buoy is a piece of lifesaving equipment used in water rescue. This flotation device can help support the victim's and rescuer's weight to make a rescue easier and safer for the rescuer. It is an essential part of the equipment that must be carried by lifeguards. It further can act as a mark of identification, identifying an individual as a lifeguard.
A lifeboat or liferaft is a small, rigid or inflatable boat carried for emergency evacuation in the event of a disaster aboard a ship. Lifeboat drills are required by law on larger commercial ships. Rafts (liferafts) are also used. In the military, a lifeboat may double as a whaleboat, dinghy, or gig. The ship's tenders of cruise ships often double as lifeboats. Recreational sailors usually carry inflatable liferafts, though a few prefer small proactive lifeboats that are harder to sink and can be sailed to safety.
SS M.M. Drake was a wooden steam barge that towed consorts loaded with coal and iron ore on the Great Lakes. She came to the rescue of the crews of at least four foundering vessels in her 19-year career only to meet the same fate in her final rescue attempt. Drake sank in 1901 off Vermilion Point after a rescue attempt of her consort Michigan. Her rudder, anchor, and windlass were illegally removed from her wreck site in the 1980s. They are now the property of the State of Michigan. The rudder is on display as a loan to the Great Lakes Shipwreck Museum and the anchor and windlass are on loan for display to Whitefish Township Community Center. The wreck of Drake is protected as part of an underwater museum in the Whitefish Point Underwater Preserve.
The Seenotdienst was a German military organization formed within the Luftwaffe to save downed airmen from emergency water landings. The Seenotdienst operated from 1935 to 1945 and was the first organized air-sea rescue service.
Mi Amigo was originally a three-masted cargo schooner, that later gained international recognition as an offshore radio station. She was built as the schooner Margarethe for German owners. A sale in 1927 saw her renamed Olga and she was lengthened in 1936. During the Second World War, she was requisitioned by the Kriegsmarine and served as an auxiliary ship between 1941 and 1943. In 1953, the ship was again lengthened to 133 feet 9 inches (40.77 m). In 1959, she was sold for conversion to a floating radio station and was renamed Bon Jour. Subsequently, she was renamed Magda Maria in 1961 and Mi Amigo in 1962. She served, intermittently, as a radio ship, until 1980, when she sank in a gale.
Water safety refers to the procedures, precautions and policies associated with safety in, on, and around bodies of water, where there is a risk of injury or drowning. It has applications in several occupations, sports and recreational activities.
The Marine Branch (1918–1986) was a branch of the Royal Air Force (RAF) which operated watercraft in support of RAF operations. Just days after the creation of the RAF itself, the Marine Craft Section (MCS) was created with the transfer of Royal Naval Air Service (RNAS) vessels and personnel to the new service. Originally tasked with the support of RNAS, and later RAF, seaplanes, Marine Craft Section was to achieve its greatest size during the Second World War, and achieved fame for its role in air-sea rescue operations. After the war MCS was granted full branch status on 11 December 1947; however, post-war the role of the new branch became greatly reduced with the end of the British Empire, the withdrawal of flying boats from service, and the increasing use of helicopters in air-sea rescue. The branch was disestablished on 8 January 1986.