NAVYPEDIA

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
B1			MV Horten	1915	1.8.1922	1923	sold 1946
B2			MV Horten		15.8.1923	1924	captured by Germany 9.4.1940, BU
B3			MV Horten		25.1.1924	1926	scuttled 9.4.1940
B4			MV Horten		19.12.1923	1927	captured by Germany 9.4.1940, BU
B5			MV Horten	1925	17.6.1929	10.1929	captured by Germany 9.4.1940 (UC1)
B6			MV Horten	1925	4.9.1929	5.1930	captured by Germany 9.4.1940 (UC2)

Technical data

Displacement standard, t	420
Displacement normal, t	/ 545
Length, m	51.0
Breadth, m	5.33
Draught, m	3.50
No of shafts	2
Machinery	2 Sulzer diesels / 2 electric motors
Power, h. p.	900 / 700
Max speed, kts	14.5 / 10.5
Fuel, t	diesel oil
Endurance, nm(kts)	2900(9) / 150(3)
Armament	1 x 1 - 76/28 Bofors, 4 - 450 TT (bow, 6)
Complement	23
Diving depth operational, m	60

Standard scale images

Project history

Single-hulled submarines of Holland type, built in Norway under US design. To the Second World War beginning they have become outdated.

Modernizations

None.

Naval service

B1 in July, 1940 has left to England where it was used as training till July, 1944. B2, B4, B5 and B6 were captured by German troops at Kristiansand (B2 and B5), Horten (B4) and Florö, the Sunn-fjord (B6) in period from 9.4 till 18.5.1940 First two were broken up, and B5 and B6 after repair were commissioned by Kriegsmarine as UC1 and UC2 in November, 1940 and November, 1941, respectively. They used for training, UC1 was broken up and UC2 scuttled 3.5.1945. B3 was scuttled by crew at Tromsö 9.6.1940 to avoid capture.