Chariot manned torpedo
The Chariot was a British human torpedo used in World War II. The Chariot was inspired by the operations of Italian naval commandos, in particular the raid on 19 December 1941 by members of the Decima Flottiglia MAS who rode "Maiali" manned torpedoes into the port of Alexandria and there placed limpet mines on or near the battleships HMS Valiant and HMS Queen Elizabeth as well as an 8,000-ton tanker, causing serious damage which put both battleships out of operational use until 1943.
History
Official development of the Chariot began in April 1942, primarily led by two officers of the Royal Navy's submarine service: Commander Geoffrey Sladen DSO*, DSC and Lieutenant Commander William Fell. Training of crews was based out of the depot ship HMS Titania initially stationed at Gosport and later in Scotland at Loch Erisort, Loch a' Choire and Loch Cairnbawn and out of in the same region.Design and intended use
Models and specifications
Two models of the Chariot were produced:;Chariot Mark I
Produced from 1942, the Mark I was long, wide, high, capable of a speed of and weighed 1.6 tonnes. It had a maximum diving depth of. Its motor had three settings: slow, medium and full. Its top speed was about 3.5 knots. The motor was powered by battery which provided endurance of about seven or eight hours at 2.9 knots, depending on current etc. Its control handle was shaped like. The detachable warhead contained of Torpex. Thirty-four Mk.I Chariots were made.
;Chariot Mark II
Produced from early 1944, the Mark II was long, diameter, maximum height, weighing, max speed 4.5 knots, range 5–6 hours at full speed, had two riders, who sat back to back. The Mk.II warhead contained of explosives, twice the weight of the warhead on the Mk. I. Thirty Mk.II Chariots were made.
The Mk.II is easily visually distinguishable from the Mk.I in that the crew would sit fully enclosed within the hull save for their heads which would protrude.
Both types were made by Stothert & Pitt, crane makers at Bath, Somerset.
Delivery to objective
A Chariot's limited range meant that it had to be transported relatively close to its objective before its crew could ride it to the target under its own power. The warhead, which was detonated by timer, would be detached and left at the enemy ship. The crew would then attempt to ride the Chariot to a rendezvous with a friendly submarine or be forced to abandon the Chariot and escape by other means.The first attempt to use Chariots operationally was Operation Title. Two Chariots were transported to occupied Norway in October 1942 aboard a fishing vessel, the Arthur, with the objective of attacking the German battleship Tirpitz in Trondheim Fjord. In order to avoid detection by the Germans, the unmanned Chariots were towed submerged under the vessel for part of the way, but both worked loose in bad weather and were lost. Later deployment of the Chariot was made by carrying the machines to their point of departure by submarine. In early attempts, tubes were fitted to the deck of a submarine to contain the Chariots. The tubes were 24 feet 2 inches long and had an exterior height of 5 feet 4 inches. The Chariots sat on wheeled bogeys inside, strapped down until needed. Ten tubes were built in all, three fitted to HMS Trooper, two to HMS P311 and HMS Thunderbolt and one each to HMS L23 and HMS Saracen.
Later in the war, due to problems encountered with this method, Chariots were instead secured to the deck of the submarine using chocks.
Operational successes
Arguably, British operations with Chariots were not as successful as the Italians' operations had been. Nevertheless, interspersed among a number of technical equipment failures and bad luck, there were some notable successes, which are set out below.Operation Principle: Attack on ships in Palermo and La Maddalena harbour
On 3 January 1943 a number of Chariots launched from the submarines HMS Thunderbolt and HMS Trooper attacked and sank the Italian Capitani Romani-class cruiser the Ulpio Traiano in Palermo harbour, and severely damaged the Italian troop ship, a former ocean liner, Viminale.Six charioteers were captured and two others died. Only one Chariot, along with its crew, was recovered. Rod Dove received the DSO for his part in the raid.
At the same time P311 was scheduled to attack targets at La Maddalena; the Italian heavy cruiser Gorizia and Trieste. P311 never returned and was presumed to have struck a mine.