HNoMS Rauma (1939)

HNoMS Rauma (1939)

As the threat of war in Europe became ever more clear the decision was made to improve the Royal Norwegian Navy's mine warfare capabilities. At first a number of 2. class gunboats were rebuilt into minelayers and minesweepers, but with war looming it soon became clear that more capable vessels were required.Norwegian Defence Force official website: [http://www.mil.no/sjo/keskdr/minekrig/start/om_mv/mv_historie/#2 "Otra" and "Rauma"] no icon] Thus, two new purpose-built minesweepers were constructed at Nylands Verksted in Oslo; the "Otra" and the "Rauma". Both ships were completed and commissioned only a short time before the German invasion of Norway. The "Otra" class vessels used the Oropesa system of minesweeping.

Name

She was named after the Rauma, a 68 km long river in the counties of Oppland and Møre og Romsdal in Norway.

The invasion

Prelude

Shortly before the German invasion the UK announced that the Royal Navy had laid out a number of minefields along the coast of Norway to interfere with the German import of Swedish iron ore through the north Norwegian port of Narvik. The British government claimed to have mined three areas; off Stad, Hustadvika, and Landegode north of Bodø. In response to this report, the Norwegian government ordered the minesweepers "Otra" and "Rauma" to sail north from their base in Horten and sweep the minefields on 9 April 1940.

The invasion force is spotted

Before the order to go north could be carried out, however, the German invasion of Norway began in the early hours of 9 April. As reports of intruding warships started coming in the "Otra" was sent out to investigate, and at 0410 hrs reported that the intruders were German. The invasion flotilla blocked the "Otra"'s return to Horten. [Abelsen 1986: 88]

Battle in Horten harbour

An important part of the Germans' plan to invade Norway was the seizure of the Royal Norwegian Navy's main naval base at Horten in the Oslofjord. A force consisting of the R-boat [ [http://german-navy.de/kriegsmarine/ships/minehunter/rboat/index.html R-boat (Minenräumboot)] , german-navy.de] minesweepers "R.17" and "R.27" and the torpedo boats "Albatros" and "Kondor" entered the Horten harbour at 0435 hrs, shortly after the invasion was identified by "Otra". Defending the naval base was the "Rauma" and the minelayer HNoMS "Olav Tryggvason". The "Rauma" charged the enemy vessels with her single 76 mm gun and two machine guns, succeeding in helping the "Olav Tryggvason" sink the "R.17" and force a damaged "Albatros" to flee the area. However, despite the intense fire from the two Norwegian warships, the "R.27" managed to land a small force of infantry in the harbour before running aground after repeated hits. While running the gauntlet between the Norwegian ships the "R.27" returned fire and hit the "Rauma" repeatedly, severely damaging the minesweeper and killing her commander, Lieutenant I. K. Winsnes, and a sailor, as well as wounding six others. [Abelsen 1986: 89] Only eight crew members remained unwounded. At 0735hrs, after threats of aerial bombardment of the naval base and the city right next to it, as well as a misguided impression of the size of the German landing force, the Norwegian forces at Horten surrendered.

German service as the "Kamerun"

After the German capture of Horten the surrendered Norwegian vessels were pressed into Kriegsmarine service. The "Rauma" was repaired and recommissioned as the "Kamerun" on 18 April 1940. The "Kamerun" first served as a Vorpostenboot in the Hafenschutzflotille Oslo, later being converted into a minelayer. "Kamerun" spent her entire war in Norway and was part of the German Mine Sweeping Administration (GM-SA) after the German surrender in 1945.

Post-war service

After the war the "Rauma" was recommissioned in 1947 and in 1949 was rebuilt as a minelayer training ship. She was decommissioned in Horten 21 Aug, 1959 and laid up until put out of service and sold in April 1963.

ee also

* List of World War II ships of less than 1000 tons

Footnotes

Literature

* Abelsen, Frank: "Norwegian naval ships 1939-1945", Sem & Stenersen AS, Oslo 1986 ISBN 82-7046-050-8
* Berg, Ole F.: _no. "I skjærgården og på havet - Marinens krig 8. april 1940 - 8. mai 1945", Marinens Krigsveteranforening, Oslo 1997 ISBN 82-993545-2-8 77 no icon


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