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The Type VIIF boats were designed in 1941 as supply boats to rearm U-boats at sea once they had used up their torpedoes. This required a lengthened hull and they were the largest and heaviest type VII boats built. They were armed identically with the other Type VIIs except that they could have up to 39 torpedoes onboard and had no deck guns.


Only four Type VIIFs were built. Two of them, U-1062 and U-1059, were sent to support the Monsun Gruppe in the Far East; U-1060 and U-1061 remained in the Atlantic. Type VIIF U-boats used the same engines as the Type VIID class. Three were sunk during the war, the last was scuttled after the war along with the majority of the surrendered U boats.


Displacement: 


1,084 tonnes (1,067 long tons) surfaced


1,181 t (1,162 long tons) submerged


Length:               

77.63 m (254 ft 8 in) o/a

60.40 m (198 ft 2 in) pressure hull


Beam:  

7.30 m (23 ft 11 in) o/a

4.70 m (15 ft 5 in) pressure hull

Height: 9.60 m (31 ft 6 in)

Draught:  4.91 m (16 ft 1 in)


Installed power:             

2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels)

750 PS (550 kW; 740 shp) (electric)


Propulsion:       

2 shafts; 2 × diesel engines

2 × electric motors


Speed: 16.9–17.6 knots (31.3–32.6 km/h; 19.4–20.3 mph) surfaced


Range: 

14,700 nmi (27,200 km; 16,900 mi) at 10 knots (19 km/h; 12 mph) surfaced

75 nmi (139 km; 86 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged


Test depth:       

200 m (660 ft)

Calculated crush depth: 220–240 m (720–790 ft)


Crew: 4 officers, 42 enlisted


Armament:       

5 × 53.3 cm (21 in) torpedo tubes (4 bow, 1 stern)

14 × torpedoes or up to 40 in transport role

1 × 3.7 centimetres (1.5 in) SK C/30 anti-aircraft gun (1,195 rounds)

2 × 2 centimetres (0.79 in) Flak anti-aircraft guns (4,380 rounds)


Ordered 25 Aug 1941


Laid down         4 Jun 1942        F. Krupp Germaniawerft AG, Kiel (werk 693)


Launched          12 Mar 1943   


Commissioned   1 May 1943       Oblt. Herbert Brüninghaus


Commanders    

1 May 1943       -           30 Sep 1943         Herbert Brüninghaus

1 Oct 1943        -           19 Mar 1944         Oblt. Günter Leupold


Career

1 patrol

1 May 1943       -           31 Dec 1943        5. Flottille (training)

1 Jan 1944        -           19 Mar 1944        12. Flottille (active service)


Successes         No ships sunk or damaged


Fate: Sunk on 19 March 1944 in the Atlantic south-west of the Cape Verde Islands, in position 13.10N, 33.44W, by depth charges from an Avenger and a Wildcat aircraft (VC-6 USN/T-3) of the US escort carrier USS Block Island. 47 dead and 8 survivors.


By www.uboat.net


 

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