Finnish minelayer Ruotsinsalmi

Last updated
Miinalaiva Ruotsinsalmi (SA-kuva 89401).jpg
Ruotsinsalmi
History
Military Flag of Finland.svgFinland
NameRuotsinsalmi
Namesake Battle of Ruotsinsalmi (1790)
Builder Wärtsilä Crichton-Vulcan, Turku
LaunchedOctober 1940
Commissioned1941
Decommissioned1975
FateDecommissioned in 1975, scrapped in the 1990s
General characteristics
Class and type Ruotsinsalmi-class minelayer
Displacement310 t
Length50.0 m (164 ft 1 in)
Beam7.9 m (25 ft 11 in)
Draught1.5 m (4 ft 11 in)
Propulsion
  • 2 × Rateau diesel (835 kW (1,120 hp))
  • later
  • 2 × MAN diesel (894 kW (1,199 hp))
Speed15 knots (28 km/h; 17 mph)
Armament

Ruotsinsalmi was a minelayer of the Finnish Navy and the namesake of her class. Ruotsinsalmi was commissioned in 1940 and remained in service until 1975. The vessel was named after the battle of Ruotsinsalmi, which was fought between Sweden and Russia in 1790.

Contents

New minelayers for the navy

Funding for two new minelayers had been secured as early as in 1937, but instead the money was used to refurbish the garrison at Mäkiluoto.

Ruotsinsalmi and her sister vessel, Riilahti, were intended as escort minesweepers for the Finnish navy's coastal defence ships Ilmarinen and Väinämöinen, and they were therefore designed with a draught of only 1.5 metres (4 ft 11 in). Ruotsinsalmi was armed with one 75-millimetre (3.0 in) gun, one Bofors 40 mm guns and two Madsen 20 mm anti-aircraft cannons. The vessel had three mine dropping rails, and could carry about 100 mines. The ship could also hunt submarines, and was equipped with sonar, depth charge throwers and rails. The vessel was also strong enough to be able to tow mine sweeping equipment. It was equipped with smoke generators so it could protect itself and other near-by vessels from the enemy.

During the Continuation War

Ruotsinsalmi and Riilahti began mining the Gulf of Finland on 26 June 1941, immediately after the outbreak of the Continuation War. The first minefield, Kipinola, Ruotsinsalmi laid together with Riilahti south-east of Hanko which was intended to block Soviet seaways to Hanko. Same group laid already on 27 June the next minefield, Kuolemajärvi, north-west of Paldiski again to block route to Hanko. Another one, Valkjärvi, was laid on 29–30 June. [1]

Minefields laid by Ruotsinsalmi in 1941 [2]
DateMinesLocationLaid by
26 June200 contact minesSE of Hanko
  • Riilahti
  • Ruotsinsalmi
27.6.200 contact minesNE of Osmussaar
  • Riilahti
  • Ruotsinsalmi
30.6.200 contact minesNE of Juminda
  • Riilahti
  • Ruotsinsalmi
21.7.
  • 85 contact mines
  • 15 anti-sweep obstacles
N of Mohni Ruotsinsalmi
10.8.201 contact minesNE of Juminda
  • Riilahti
  • Ruotsinsalmi
11.8.195 contact minesNE of Juminda
  • Riilahti
  • Ruotsinsalmi
13.8.200 contact minesNE of Juminda
  • Riilahti
  • Ruotsinsalmi
12.11.139 contact minesSSE of Helsinki
  • Riilahti
  • Ruotsinsalmi
Minelaying operations aboard Ruotsinsalmi in May 1942 Laying mines aboard Finnish minelayer Ruotsinsalmi May 1942 (SA-kuva 88630).jpg
Minelaying operations aboard Ruotsinsalmi in May 1942

Ruotsinsalmi together with Riilahti participated in ferrying the Finnish gunboats past Hanko in August 1941. After two failed attempts by gunboats to rendezvous with minelayers on the nights of 25-26 and 27–28 August the minelayers penetrated the Soviet minefield and met with the gunboats west of Hanko and then escorted them through to Helsinki on 29 August 1941. [3]

Ruotsinsalmi again with Riilahti were sent on 21 November to as minesweeping escorts for convoy of German ships consisting of two tugs and a depot ship headed to west through the Soviet minebarrier south of Hanko. However, in the dark the convoy deviated from the swept route and as the sweeping gear became entangled with mines it had stop. Before the convoy managed to resume its journey, tug Föhn slipped outside the swept area and sank after hitting a mine but the rest of the convoy reached its destination. The voyage back through the minebarrier with a convoy of freighters started at midnight of 3 December after the escort group had been strengthened with German minesweepers M 4 and M 7 and it took place without any incidents. [4]

Ruotsinsalmi was Finland's most active minelayer during the Second World War, laying a total of 3,967 sea mines and 541 sweeping obstacles. She was forced to lay mines against the Germans after the end of the hostilities with the Soviet Union in an attempt to hinder German submarine activity. [5]

She participated in the sinking of one Soviet submarine Shch-408 on 25 May 1943 (along with VMV 6).

After the war

Ruotsinsalmi had proven to be a sound design and well suited for its task. However, it continued to serve a number of different missions after the war. The ship ended its career as a diving support vessel (1973–1975). She was mothballed in Upinniemi, and there were plans to make her into a museum, but she was scrapped at the beginning of the 1990s, after the owners had failed to gather enough funds.

Related Research Articles

<span class="mw-page-title-main">Finnish Navy</span> Military unit

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.

<span class="mw-page-title-main">Baltic Sea campaigns (1939–1945)</span> WWII Axis and Allied campaigns

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.

Finnish submarine <i>Vesihiisi</i>

Vesihiisi was a Finnish 500-tonne Vetehinen-class submarine that was constructed in the early 1930s. The vessel served in the Finnish Navy during the second World War. The name Vesihiisi refers to a mythological Finnish sea creature similar to a Siren.

Finnish submarine <i>Vetehinen</i>

Vetehinen was a 500-tonne Vetehinen-class submarine that was constructed in the early 1930s, which served in the Finnish Navy during the Second World War. The submarine was the first ship of its class of three submarines. The name vetehinen means "merman".

Finnish submarine <i>Iku-Turso</i> Finnish submarine

Iku-Turso was a 500-tonne Vetehinen-class submarine that served in the Finnish Navy during the Second World War. It was launched in May 1931 and was named after a mythological Finnish sea monster, Iku-Turso. It was built by the Crichton-Vulcan shipyard in Turku according to a project developed by NV Ingenieurskantoor voor Scheepsbouw, "IvS", and was scrapped in 1953.

Finnish submarine <i>Saukko</i>

Saukko (Pu110) was a small submarine that served in the Finnish Navy during the Second World War. It was designed not to exceed 100 tonnes, as it was planned for use in Lake Ladoga, and according to the 1920 Treaty of Tartu, no nation was allowed to use naval ships of more than 100 tonnes on the lake. The submarine could be divided into separate sections and transported by rail. The conning tower could be lifted off entirely. The engines were in the aft section and the batteries in the forward section. The name "Saukko" means European otter.

Finnish gunboat <i>Turunmaa</i>

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.

Finnish gunboat <i>Karjala</i>

Karjala (ex-Filin) was a Finnish gunboat, built in 1918 at Ab Crichton shipyard in Turku. She served in the Finnish Navy during World War II. Karjala was named after the Finnic cultural region of Karelia. Like her sister ship Turunmaa, she served as cadet training vessel during peacetime and was nicknamed as Kurjala by cadets.

Finnish gunboat <i>Uusimaa</i>

Uusimaa was a gunboat that served in the Finnish Navy during World War II. She was built in 1917. As the ship had changed hands many times during the turbulent last years of World War I she had been renamed many times: In Russian service, she was called Golub, later, in German service, her name was Beo. Finally the Germans handed her over to the Finns in 1920, who renamed her Uusimaa. After World War II, she served as a trawler in the Baltic Sea. She was scrapped in 1953.

The Syöksy-class motor torpedo boats was a series of four British Thornycroft type motor torpedo boats of the Finnish Navy. The vessels were constructed in 1928 by the John Thornycroft & Co. shipyard in Woolston, UK. The vessels saw service in World War II. The Thornycroft type released its torpedoes by dropping them from rails in the aft. The ship then had to steer away from the torpedoes path, a manoeuvre that could be quite tricky in the close waters of the Gulf of Finland.

<span class="mw-page-title-main">Soviet evacuation of Tallinn</span> Evacuation of the Baltic Fleet and Soviet citizens from Tallinn

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 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.

<span class="mw-page-title-main">Battle of Someri</span>

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.

Finnish minelayer <i>Riilahti</i>

Riilahti was a Ruotsinsalmi class minelayer of the Finnish Navy. Riilahti was commissioned in 1940 and sunk in 1943. The vessel was named after the battle of Riilahti, which was fought between Sweden and Russia in 1714.

<i>Ruotsinsalmi</i>-class minelayer Finnish navy minelayer class

The Ruotsinsalmi-class minelayers were a two-strong class of minelayers in the Finnish Navy. The two ships, comprising Ruotsinsalmi and Riilahti, were constructed in Finland and saw service in the Winter War and World War II. Riihahti was sunk in an engagement with Soviet motor torpedo boats on 23 August 1943. Ruotsinsalmi survived the wars and remained in service in the post war Finnish Navy until being withdrawn in the 1970s.

Finnish minelayer <i>Louhi</i>

Louhi was a Finnish Navy minelayer. The ship was originally constructed for the Imperial Russian Navy but was taken over by the Finns during the Russian Civil War. She had originally been named Voin, but was renamed as M1 in Finnish service. In 1936 she was given the more personal name Louhi, following the procedure of all other major ships in the Finnish navy.

The Teplokhod class motor minelayer was constructed as inshore motor minelayers intended for laying ground controlled shallow water minefields. Their small size and ability to maneuver in shallow waters made them suited for this task however those same features made it dangerous to operate these ships in open sea.

The Romanian Navy during World War II was the main Axis naval force in the Black Sea campaigns and fought against the Soviet Union's Black Sea Fleet from 1941 to 1944. Operations consisted mainly of mine warfare, but there were also escort missions and localized naval engagements. The largest naval action fought by the Romanian Navy was the 26 June 1941 Raid on Constanța, and its most extensive operation was the 1944 evacuation of the Crimea.

<span class="mw-page-title-main">Soviet Baltic Sea submarine campaign in 1942</span>

The Soviet Navy launched the Soviet submarine Baltic Sea campaign in 1942 to harass the strategic iron-ore traffic from neutral Sweden to Nazi Germany during World War II. The Soviet Union and the German Reich fought each other on the Eastern Front (1941-1945) during the war. The Allies also launched other operations - especially involving the Royal Navy - against the traffic.

<span class="mw-page-title-main">Soviet Baltic Sea submarine campaign in 1943</span>

The Soviet submarine Baltic Sea campaign in 1943 was launched by the Soviet Navy to harass the strategic iron ore traffic from neutral Sweden to Nazi Germany on the Eastern Front during the WWII. Other operations were launched by Allies, especially by the Royal Navy. The offensive was a repetition of the previous campaign in 1942 but resulted in a failed outcome.

References

Citations

  1. Kijanen 1968, p. 18-19.
  2. Kijanen 1968, p. 23.
  3. Kijanen 1968, p. 41-43.
  4. Kijanen 1968, p. 65-66.
  5. Kijanen 1968, p. 232-233.

Bibliography