Kobben (ship, 1909)
 The " sister ship " A-4
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The Kobben (renamed A-1 in February 1913 ) was the first submarine in the Norwegian Navy . It was in service from 1909 to 1919, retired in 1926 and scrapped in 1933.
Construction and technical data
The boat was ordered from the Germania shipyard in Kiel on September 28, 1907 ; the construction price was 936,000 Norwegian kroner . The boat was 39.3 meters long, 3.7 meters wide and had a draft of 3.0 meters when sailing above the water . It displaced 206 ts over water and 259 ts submerged. The maximum diving depth was 50 meters.
When sailing above water, two petroleum engines with 225 British horsepower (bhp) each enabled a top speed of 11.9 knots via two shafts and propellers ; two electric motors with 150 bhp each allowed a speed of up to 8.9 knots under water. The surface range of the boat was 1,450 nautical miles at a cruising speed of 9 knots, under water only 45 nautical miles at 6.5 knots.
The boat had two 45 cm torpedo tubes in the bow and a 45 cm tube on the stern and could carry a total of five torpedoes. The crew consisted of 14 men.
history
On November 28, 1909 in Kiel Kapitänleutnant (Kaptein i marinen) Carsten Tank-Nielsen was the first in command to hoist the Norwegian flag on the boat; In 1907/08 he had received further training in engine and electrical engineering at the Technical University of Hanover in preparation for his future use , and then headed the training for the future crew of the boat. The boat then went on test drives and diving exercises in the Great Belt for two weeks and finally arrived on December 12, 1909, accompanied by the Fram serving as mother ship , at the Norwegian naval base in Horten , where it was ceremonially commissioned the following day.
The boat served as a test and school boat until the outbreak of World War I, and Tank-Nielsen remained its commander until 1913. The experience gained with the Kobben was so satisfactory that in May 1911 the Norwegian Navy ordered four more, but about 20 percent larger submarines from the Germania shipyard, three of which ( A-2 , A-3 and A-4 ) were still there were delivered before the beginning of World War I, but the fourth was confiscated by the German Imperial Navy and put into service as the UA . With the commissioning of A-2 , the Kobben was renamed A-1 on February 21, 1913 . Tank-Nielsen, promoted to corvette captain , was appointed head of the newly formed submarine division and commanders of the old steam corvette Ellida , which was converted into the submarine mother ship. During the war, the four boats patrolled Norwegian waters in order to safeguard Norway's neutrality .
On September 30, 1919, A-1 was decommissioned and launched . In 1926 the boat was taken out of service and then sold and demolished in 1933.
Footnotes
- ↑ The Fram was a 452 GRT transport ship of the Norwegian Navy built in 1900. She served as a submarine mother ship until the old corvette Ellida, converted for this purpose, took over this task in 1914.
literature
- Christian Sparre (Ed.): Norges Sjøforsvar 1814-1914. Aschehoug, Kristiania / Oslo, 1914 (norw.)
- David Miller: The illustrated directory of submarines of the world. Zenith Press, Osceola, Wisconsin, USA, 2002, ISBN 0-76031-345-8 , pp. 50-51 (English)