This article includes a list of general references, but it lacks sufficient corresponding inline citations .(July 2012) |
Battle of Hanko | |||||||
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Part of the Continuation War and Eastern Front | |||||||
Map showing the borders of the leased area | |||||||
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Belligerents | |||||||
Finland | Soviet Union | ||||||
Strength | |||||||
22,000 (July 1941) 12,500 (Autumn 1941) | 25,300-30,000 [1] | ||||||
Casualties and losses | |||||||
297 killed 604 wounded 78 missing Total: 961 [2] | 797 killed 1,476 wounded Estimated 3,000-5,000 killed during the evacuation from Hanko |
The Battle of Hanko (also known as the Hanko front or the siege of Hanko) was a lengthy series of small battles fought on Hanko Peninsula during the Continuation War between Finland and the Soviet Union in the second half of 1941. As both sides were eager to avoid a major, costly ground battle, fighting took the form of trench warfare, with artillery exchanges, sniping, patrol clashes, and small amphibious operations performed in the surrounding archipelago. A volunteer Swedish battalion served with Finnish forces in the siege. The last Soviet troops left the peninsula in December 1941.
As part of the 1940 Moscow Peace Treaty which formally ended the Soviet-Finnish Winter War, Hanko was leased to the Soviet Union as a Soviet naval base. The civilian population was forced to evacuate before Soviet forces arrived. The leased area included several surrounding islands, several coastal artillery sites (among them the important fort of Russarö), important harbor facilities, and an area suitable for an airfield, which the Soviets quickly constructed. Troop transport rights from the Soviet Union to Hanko and back put severe strain on Finnish-Soviet relations, and played a part both in Finland's decision to allow German troops to transit Northern Finland, and later, to go to war with the Soviet Union. Though Hanko had originally been leased as a naval base, ground forces were far more numerous, with only a small naval detachment being present at the base.
At the start of the war, Finnish ground troops quickly isolated Hanko and its 25,300-man Soviet garrison. Though Mannerheim initially declared that liberating Hanko would be a primary goal of the war, Finnish troops in the area did not receive authorization to attack the base. Instead, as the Finns had built the Harparskog line on the border of the leased area during the Interim Peace, they moved to occupy these positions. The front remained mostly static, with action consisting mainly of artillery strikes and some limited probing or patrol activities on both sides. Small scale naval and amphibious actions took place in the surrounding archipelago. Finnish forces surrounding the base initially consisted of the 17th Division, the 4th Coastal Brigade, and supporting units. By the end of the summer, the 17th Division, which had made up the bulk of the besieging force, was transferred to East Karelia.
Finnish efforts to blockade the base from the sea were less successful, due both to strong Soviet resistance, and to equipment failures (such as torpedoes used by Finnish submarines, which often failed to detonate on impact). [3] Minefields laid on the sea lanes leading to Hanko and the surrounding waters were more effective, claiming several Soviet supply vessels. These problems, in addition to the rapid German advance on the southern shore of the Gulf of Finland, caused the base to lose its importance and made it an untenably heavy burden for the Soviet Baltic Fleet. In autumn 1941 the order was given to evacuate Hanko. Base personnel, troops and most of their light equipment and supplies had been removed by December 1941. Heavier equipment which couldn't be readily moved was sabotaged or destroyed in place. Soviet naval forces performing the evacuation suffered heavy losses from minefields. [3]
The Soviet base at Hanko, its accompanying coastal fort at Osmussaar, and the minefields laid to protect the Soviet Baltic Fleet, had hindered Finnish and German naval activities, and had made it problematic for freighters to reach the Finnish ports of Helsinki and Kotka. As Finland lacked the resources to transport enough goods over land, this caused severe logistical problems, with material stuck in seaports on the Western coast. Finnish and German minesweepers opened a sea-lane through the minefields outside of the gun range of Russarö to allow freighters to reach even the Eastern ports, but it wasn't until the Soviet evacuation that they were able to clear the more secure coastal sea-lane, allowing safer passage. [3]
Both Finnish and Soviet coastal forces conducted numerous small-scale amphibious operations in the archipelago surrounding the Hanko Peninsula. The first of these clashes took place at the beginning of July 1941; active operations ended the following October. Fighting on these small islands was often fierce, and withdrawing from them under fire was extremely hazardous. In general the operations had little effect on the overall battle, as territorial gains remained negligible.
After capturing the small island of Morgonlandet in July 1941, Soviet forces launched a small-scale amphibious assault against the Finnish island of Bengtskär, which had a lighthouse and was thus an important observation post. The initial landing, performed in the middle of the night in foggy conditions, was successful, as Finnish sentries believed the approaching boats to be German minesweepers; however, the small garrison recovered quickly. Putting up fierce resistance, the Finns managed to retain control of the lighthouse while summoning help from nearby naval forces and coastal artillery. The fighting continued throughout the night. In the morning Finnish reinforcements were able to force the remaining Soviet raiders to surrender and drive their naval support away. [4]
Hanko was evacuated in several convoys between 16 October and 1 December 1941. Roughly 23,000 troops were transported to Leningrad. The fleet suffered losses to Finnish minefields and coastal artillery, losing three destroyers, two large transports (Andrei Zhdanov and Iosif Stalin ), and several smaller vessels. Finnish troops entering the area found it heavily mined. [3] [5]
Hanko is a town in Finland, located in the southern coast of the country. Hanko is situated in the western part of the Uusimaa region. The population of Hanko is approximately 8,000, while the sub-region has a population of approximately 40,000. It is the 121st most populous municipality in Finland.
Porkkalanniemi is a peninsula in the Gulf of Finland, located at Kirkkonummi (Kyrkslätt) in Southern Finland.
The Finnish Navy is one of the branches of the Finnish Defence Forces. The navy employs 2,300 people and about 4,300 conscripts are trained each year. Finnish Navy vessels are given the ship prefix "FNS", short for "Finnish Navy ship", but this is not used in Finnish-language contexts. The Finnish Navy also includes coastal forces and coastal artillery.
The Hanko Peninsula, also spelled Hango, is the southernmost point of mainland Finland. The soil is a sandy moraine, the last tip of the Salpausselkä ridge, and vegetation consists mainly of pine and low shrubs. The peninsula is known for its beautiful archipelago and long sandy beaches.
The Baltic Sea campaigns were conducted by Axis and Allied naval forces in the Baltic Sea, the Gulf of Bothnia, the Gulf of Finland and the connected lakes Ladoga and Onega on the Eastern Front of World War II. After early fighting between Polish and German forces, the main combatants were the Kriegsmarine and the Soviet Navy, with Finland supporting the Germans until 1944 and the Soviets thereafter. The Swedish Navy and merchant fleet played important roles, and the British Royal Navy planned Operation Catherine for control of the Baltic Sea and its exit choke point into the North Sea.
The Interim Peace was a short period in the history of Finland during the Second World War. The term is used for the time between the Winter War and the Continuation War, lasting a little over 15 months, from 13 March 1940 to 24 June 1941. The Moscow Peace Treaty was signed by Finland and the Soviet Union on 12 March 1940 and it ended the 105-day Winter War.
HNoMS Olav Tryggvason was a minelayer that was built by the naval shipyard at Horten in the early 1930s with the yard number 119. She served in the Royal Norwegian Navy until captured by the Germans in 1940. The Germans renamed her first Albatros II, and a few days later Brummer. She was wrecked in a British bombing raid in northern Germany in April 1945.
Turunmaa was a Finnish gunboat built in 1918. She served in the Finnish Navy during World War II. The ship was named after Turuma, a type of frigate designed for use in shallow waters of the archipelago and served in the Swedish Archipelago fleet in the late 18th century. The frigates had in turn been named after the region of Finland.
Operation Kilpapurjehdus ("Regatta") was the covername for the militarization of the Åland islands during World War II. The operation took place on June 22, 1941, and in this way, Finland strived to prevent Soviet landings in the area.
The Battle of Suursaari was fought over the frozen Gulf of Finland on and around the islands of Gogland and Bolshoy Tyuters during the Second World War. After sharp fighting the numerically superior Finnish forces seized the Gogland and Bolshoy Tyuters, and later provided support for Nazi German forces defending Bolshoy Tyuters against Soviet counterattacks.
Finnish Ladoga Naval Detachment was a Finnish naval unit stationed on Lake Ladoga between 1920–1940 and 1941–1944.
The Soviet evacuation of Tallinn, also called Juminda mine battle, Tallinn disaster or Russian Dunkirk, was a Soviet operation to evacuate the 190 ships of the Baltic Fleet, units of the Red Army, and pro-Soviet civilians from the fleet's encircled main base of Tallinn in Soviet-occupied Estonia during August 1941. Near Juminda peninsula Soviet fleet ran into minefield that had been laid by the Finnish and German navies, and were repeatedly attacked by aircraft and torpedo boats, incurring major losses.
The Moonsund landing operation, also known as the Moonzund landing operation, was an amphibious operation and offensive by the Red Army during World War II, taking place in late 1944. It was part of the Baltic offensive, and was designed to clear German forces of Army Group North from the islands in East Baltic Sea, the West Estonian archipelago. The attacking forces were from the 8th Army of the Leningrad Front.
The Battle of Someri took place in the Gulf of Finland during World War II on 8–9 July 1942, between the Soviet Union and Finland. Starting as a modest operation to clear a Finnish observation post from a small island, it became one of the largest surface ship engagements in the Baltic theater.
The Naval warfare in the Winter War was the naval part of the Winter War between Finland and the Soviet Union from 30 November 1939 to 13 March 1940. Overall, the level of naval activity was low. However, Finland had coastal artillery batteries which took part in battles along its coast.
Turku Coastal Regiment was a Finnish coastal artillery unit operating in the Turku area and Archipelago Sea. It was formed on 10.9.1939 as Turku Sector as part of the neutrality guard and later Winter War coastal sector system from a peace time 1st Independent Coastal Artillery Battalion. Turku Coastal Regiment was disbanded as an independent unit on 30.6.1998 and became part of the newly formed Archipelago Sea Naval Command as Turku Coastal Artillery Battalion.
Bengtskär Lighthouse is located in the Archipelago Sea about 25 kilometers south west of Hanko, Finland. The lighthouse was built in 1906 on the Bengtskär skerry where it rises 52 meters above sea level and is the highest one in the Nordic countries. The lighthouse had been planned for some time, but after the steamer s/s Helsingfors ran aground in 1905 in the vicinity en route from Lübeck to Helsinki resulting in several crew members trapped and drowned on board, the project gained urgency and was completed during the following year. Soviet troops stationed in Hanko during the Continuation War, disturbed by a Finnish observation post in the light house tried to blow up and destroy the lighthouse during the Battle of Bengtskär in 1941.
The Battle of Bengtskär was an amphibious landing action fought between Finnish and Soviet forces on 26 July 1941 during the Continuation War.
Hanko Naval Base was a Soviet naval base from 1940 to 1941 in the town of Hanko at the Hanko Peninsula, which is located 100 kilometers (62 mi) from Helsinki, the Finnish capital.
Smetlivy was one of 29 Gnevny-class destroyers built for the Soviet Navy during the late 1930s. Completed in 1938, she was assigned to the Baltic Fleet and played a minor role in the 1939–1940 Winter War against Finland. After the start of the German invasion of the Soviet Union in June 1941, the ship participated in the Gulf of Riga Campaign before withdrawing to Tallinn, Estonia. Smetlivy supported Soviet forces during the defense of Tallinn in August and covered the subsequent evacuation to Leningrad. The ship provided naval gunfire support to the defenders of Leningrad over the next several months before she was assigned to evacuate Soviet troops from their enclave in Hanko, Finland, in November. Smetlivy struck several mines returning from Hanko and sank with heavy loss of life.