The British V class submarine (officially "U-Class Long hull 1941–42 program") was a class of submarines built for the Royal Navy

Royal Navy

The Royal Navy is the naval warfare service branch of the British Armed Forces. Founded in the 16th century, it is the oldest service branch and is known as the Senior Service...

 during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. 42 vessels were ordered to this design, all to be built by Vickers-Armstrong at either Barrow-in-Furness

Barrow-in-Furness

Barrow-in-Furness is an industrial town and seaport which forms about half the territory of the wider Borough of Barrow-in-Furness in the county of Cumbria, England. It lies north of Liverpool, northwest of Manchester and southwest from the county town of Carlisle...

 or at Walker-on-Tyne, but only 22 were completed. Note that 7 of these vessels received 'U' names (conversely, 4 of the 'U' class had received names beginning with 'V').

The V-class submarines were very similar to the preceding U-class

British U class submarine

The British U class submarines were a class of 49 small submarines built just before and during the Second World War...

 (short-hull) boats, of which they constituted a linear development, but had 3/4" pressure plate instead of 1/2" for deeper diving, also a lengthened stern and fining at the bows to reduce noise and improve underwater handling.

They were sometimes referred to as Vampire-class submarines after HMS Vampire

HMS Vampire (P72)

HMS Vampire was a V-class submarine of the Royal Navy .The boat was laid down by Vickers-Armstrong at Barrow-in-Furness on 9 November 1942. She was launched on 20 July 1943, and commissioned into the RN on 13 November 1943....

.

Ships

The vessels which were ordered are shown below in their programme order (not all completed construction):

The first eight vessels were ordered on 5 December 1941 under that year's programme.

• HMS Venturer
  HMS Venturer (P68)
  HMS Venturer was a Second World War British submarine.-Construction:Venturer was the lead boat of the British V class submarine, a development of the successful U-class...
  
  
• HMS Viking
• HMS Veldt, completed as RHS Pipinos (Y8)
• HMS Vampire
  HMS Vampire (P72)
  HMS Vampire was a V-class submarine of the Royal Navy .The boat was laid down by Vickers-Armstrong at Barrow-in-Furness on 9 November 1942. She was launched on 20 July 1943, and commissioned into the RN on 13 November 1943....
  
  
• HMS Vox
• HMS Vigorous

The next eighteen vessels were ordered on 21 May 1942 under that year's programme, but six of these were cancelled in early 1944., completed as FFL Doris (P84), completed as FFL Morse (P87)

• HMS Veto (P88), cancelled 23 January 1944 and scrapped on the slip.
• HMS Virile (P89), cancelled 23 January 1944 and scrapped on the slip.
• HMS Visitant (P91), cancelled 23 January 1944 (never laid down).
• HMS Upas (P92), cancelled February 1944 and scrapped on the slip.
• HMS Ulex (P93), cancelled February 1944 (never laid down).
• HMS Utopia (P94), cancelled February 1944 (never laid down).

A further six vessels were ordered on 17 November 1942 under the same year's programme, but four of these were cancelled on 23 January 1944.

• HMS Vantage, cancelled 23 January 1944 (never laid down).
• HMS Vehement (P25), cancelled 23 January 1944 (never laid down).
• HMS Venom (P27), cancelled 23 January 1944 (never laid down).
• HMS Verve (P28), cancelled 23 January 1944 (never laid down).

Finally, a further ten vessels were ordered under the 1943 Programme, but all of these were cancelled on 20 November 1943; eight of these were never given names.

• HMS Unbridled (P11), cancelled 20 November 1943 (never laid down).
• HMS Upward (P16), cancelled 20 November 1943 (never laid down).