Limbo (weapon)

Limbo
A Limbo mortar on HMNZS Taranaki (F148)
Type	Anti-submarine mortar
Place of origin	United Kingdom
Service history
In service	1955–1980s
Used by	Royal Navy Royal Australian Navy Royal Canadian Navy Libyan Navy South African Navy
Wars	Falklands War
Production history
Designer	Admiralty Underwater Weapons Establishment
Specifications
Crew	3
Shell	400 lb depth charge
Calibre	12 inches (30 cm)
Barrels	3
Effective firing range	400 yards (366 m) to 1,000 yards (914 m)
Warhead	Minol
Warhead weight	94 kilograms (207 lb)
Detonation mechanism	Proximity and/or time
Guidance system	Type 170 sonar

Limbo, or Anti Submarine Mortar Mark 10 (A/S Mk.10), was the final development of the forward-throwing anti-submarine weapon Squid, designed during the Second World War^[1] and was developed by the Admiralty Underwater Weapons Establishment in the 1950s.^[2]

Limbo was installed on the quarterdeck of Royal Navy escort ships from 1955 to the mid-1980s, Australian-built Daring-class destroyer and River-class destroyer escorts. Limbo was widely employed by the Royal Canadian Navy, being incorporated into all destroyer designs from the late 1950s to the early 1970s, including the St. Laurent, Restigouche, Mackenzie, Annapolis and Iroquois classes and the Type 12 President Class frigates built for the South African Navy in the 1960s.