The Chariot was the British design of the manned torpedo used in World War II. The British Chariot was inspired by the operations of Italian naval commandos. The Chariot was carried to an area of operation on a submarine, and launched underwater, carrying two frogmen into action. The Chariot would enter an enemy harbor; the frogmen would place limpet mines on enemy ships, and return to the submarine.
Both types were made by Stothert & Pitt, crane makers at Bath, Somerset.
British operations with Chariots were not as successful as Italian operations had been. In fact, "the only completely successful British Chariot operation" occurred on 28–29 October 1944. Two crews on Mk II Chariots, commanded by Lieutenant Tony Eldridge RNVR, were launched from the submarine HMS Trenchant and sank two ships in the harbour of Japanese-occupied Phuket, Thailand.