Royal Navy Submarine Museum National Museum of the Royal Navy

THE COLLECTION - STAR OBJECTS

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X Craft net cutters

X craft net cutters

During the Second World War the only way to sink ships berthed in harbour, which were shallow or well defended, was to use a smaller version of a submarine. The British X-craft was a perfect submarine in miniature with detachable explosive charges on its sides.

X-craft net cutting

The enemy soon realised the potential of these crafts and their ability to go where larger submarines could not. Nets spanning the harbours were often employed to keep torpedoes and submarines out. But these net cutters, powered by hydraulic pressure (a combination of water and compressed air from pipes attached to the boat), activated a blade, enabling divers to create an entrance.

Some examples of British midget submarine successes are:

  • The crippling of the German Battleship in Bergen harbour by HMS X6 and X7 on 22 September 1943. Both commanding Officers, Donald Cameron and Godfrey Place, were awarded the Victoria Cross for this action.

  • The crippling of Japanese cruiser Takao, on 31 July 1945 by HMS XE3 in Singapore Harbour. The commanding officer, Lieutenant IE Fraser, and the diver, Leading Seaman JJ Magennis, were both awarded the Victoria Cross for this action.

  • X24 twice entered Bergen Harbour and attacked the Naval Dockyard at Laksvaag, which was under German control. On the second attack, under command of Lieutenant HP Westmacott, DSO, DSC, the floating dock used by the Germans for repairing U-boats based on this port, was destroyed.

  • It was X23 and X20 that marked the approaches for the D Day landings by signalling seaward from the surface to guide all incoming assault crafts.

HMS X24 is on display at the Submarine Museum.

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