|Career (German Empire)|
|Class and type:||Type U-151 U-boat|
|Ordered:||29 November 1916|
|Builder:||Reiherstieg Schiffswerfte & Maschinenfabrik, Hamburg|
|Yard number:||Werk 303|
|Launched:||4 April 1917|
|Commissioned:||21 July 1917|
|Captured:||Surrendered to France at Cherbourg|
|Fate:||Sunk as target ship at Cherbourg, 7 June 1921|
|Class & type:||German Type U 151 submarine|
|Displacement:||1,512 long tons (1,536 t) surfaced
1,875 long tons (1,905 t) submerged
|Length:||65 m (213 ft) overall
57 m (187 ft) pressure hull
|Beam:||8.9 m (29 ft) overall
5.8 m (19 ft) pressure hull
|Draught:||5.3 m (17 ft)|
|Propulsion:||Surfaced: 800 hp
Submerged: 800 hp
|Speed:||12.4 knots (23.0 km/h; 14.3 mph) surfaced
5.2 knots (9.6 km/h; 6.0 mph) submerged
|Range:||25,000 mi (40,000 km) at 6 kn (11 km/h; 6.9 mph) surfaced
65 mi (105 km) at 3 kn (5.6 km/h; 3.5 mph) submerged
|Test depth:||Calculated crush depth: 50 m (160 ft)|
|Complement:||56 officers & ratings|
|Armament:||• 2 × bow torpedo tubes (18 torpedoes)
• 2 × 105 mm (4 in) deck guns with 1672 rounds
|Part of:||Kaiserliche Marine U-Kreuzer Flotilla
21 July 1917 - 11 November 1918
|Commanders:||Korvetten-Kapitän Waldemar Kophamel
1917-07-21 - 1917-12-26
Korvetten-Kapitän Heinrich von Nostitz und Jänckendorff
|Victories:||37 ships sunk for a total of 89,759 gross register tons (GRT)
5 ships damaged for a total of 10,195 gross register tons (GRT)
SM U-151 or SM Unterseeboot 151 was a World War I U-boat of the Imperial German Navy, constructed by Reiherstieg Schiffswerfte & Maschinenfabrik at Hamburg and launched on 4 April 1917. From 1917 until the Armistice in November 1918 she was part of the U-Kreuzer Flotilla, and was responsible for sinking 37 ships.
The U-151 was originally one of seven Deutschland class U-boats designed to carry cargo between the United States and Germany in 1916. Five of the submarine freighters were converted into long-range cruiser U-boats (U-kreuzers) equipped with two 105mm deck guns, including the U-151 which was originally to have been named Oldenburg. They were the largest U-boats of World War I.
U-151 was commissioned on 21 July 1917. From 21 July to 26 December 1917 she was commanded by Waldemar Kophamel who took U-151 on a long-range cruise which eventually covered a total of 12,000 miles. On 19 September 1917 the U-151 claimed her first victim, the 3,104 ton French sailing vessel Blanche in the Atlantic. On 20 November 1917 U-151 captured the steamship Johan Mjelde, and scuttled her on 26 November after transferring 22 tons of her cargo of copper.
U-151 left Kiel on 14 April 1918 commanded by Korvettenkapitän Heinrich von Nostitz und Jänckendorff, her mission to attack American shipping. She arrived in Chesapeake Bay on 21 May where she laid mines off the Delaware capes, and cut the submerged telegraph cables which connected New York with Nova Scotia. On 25 May she stopped three US schooners off Virginia, took their crews prisoner, and sank the three ships by gunfire.
On 2 June 1918, known to some historians as "Black Sunday", U-151 sank six US ships and damaged two others off the coast of New Jersey in the space of a few hours. The next day the tanker Herbert L. Pratt struck a mine previously laid by U-151 in the area but was later salvaged. 13 people died in the seven sinkings, their deaths caused by a capsized lifeboat from SS Carolina.
On 9 June U-151 stopped the Norwegian freighter Vindeggan off Cape Hatteras. Scuttling charges were rigged aboard her then she was escorted outside the sea lane under a prize crew. Von Noztitz then transferred 70 tons of copper ingots from the Vindeggan to the U-151.
On the 18th of June, U-151 sank the SS Dwinsk, and then loitered near her lifeboats in the hopes that more Allied shipping would be attracted to them. Through this ruse, she launched torpedoes at the USS Von Steuben (ID-3017), but missed and was instead depth charged by the Von Steuben.
U-151 returned to Kiel on 20 July 1918 after a 94-day cruise in which she had covered a distance of 10,915 mi (17,566 km). Her commander reported that she had sunk 23 ships totalling 61,000 tons and had laid mines responsible for the sinking of another 4 vessels.
- USS Von Steuben, one of the ships she unsuccessfully attacked in 1918.
- ""Black Sunday" - Victims of U-151". Scuba Diving - New Jersey & Long Island New York.
- Hadley, Michael L.; Roger Flynn Sarty (1991). Tin-pots and Pirate Ships. McGill-Queen's Press. pp. 244–245. ISBN 0-7735-0778-7.
- "S/S C. F. Tietgen, Scandinavian America Line". Norway-Heritage. Retrieved 20 February 2008.
- Gibson, p. 308
- *Innes McCartney (2002). Lost Patrols: Submarine Wrecks of the English Channel.
- uboat.net webpage for U-151
- For a discussion of the impact of this boat on the U.S. submarine effort in WWI
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