HMS ''Hecla'' was the

lead ship The lead ship, name ship, or class leader is the first of a series or class of ships all constructed according to the same general design. The term is applicable to naval ships and large civilian vessels. Large ships are very complex and may ...

of the , an oceangoing

survey ship A survey vessel is any type of ship or boat that is used for underwater surveys, usually to collect data for mapping or planning underwater construction or mineral extraction. It is a type of research vessel, and may be designed for the purpo ...

type in the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

. She was ordered in the mid-1960s, along with her

sister ship A sister ship is a ship of the same class or of virtually identical design to another ship. Such vessels share a nearly identical hull and superstructure layout, similar size, and roughly comparable features and equipment. They often share a ...

s and . A fourth ship, , was completed in the early 1970s. The ship served for thirty years in this role, and various others, before finally being replaced by in 1997. ''Hecla'' was sold to private interests, being renamed "''Bligh''" after Vice-Admiral William Bligh. After this, the vessel was used in a hydrographic survey of

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waters, and was based in

Waterford "Waterford remains the untaken city" , mapsize = 220px , pushpin_map = Ireland#Europe , pushpin_map_caption = Location within Ireland##Location within Europe , pushpin_relief = 1 , coordinates ...

, Ireland.

Design and construction

The ''Hecla'' class were designed as combined hydrographic and

oceanographic Oceanography (), also known as oceanology and ocean science, is the scientific study of the oceans. It is an Earth science, which covers a wide range of topics, including ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamics ...

survey ships, built to merchant ship standards and of similar design to . She was

laid down Laying the keel or laying down is the formal recognition of the start of a ship's construction. It is often marked with a ceremony attended by dignitaries from the shipbuilding company and the ultimate owners of the ship. Keel laying is one o ...

Yarrow Shipbuilders Yarrow Shipbuilders Limited (YSL), often styled as simply Yarrows, was a major shipbuilding firm based in the Scotstoun district of Glasgow on the River Clyde. It is now part of BAE Systems Surface Ships, owned by BAE Systems, which has also o ...

' Blythswood,

Glasgow Glasgow ( ; sco, Glesca or ; gd, Glaschu ) is the most populous city in Scotland and the fourth-most populous city in the United Kingdom, as well as being the 27th largest city by population in Europe. In 2020, it had an estimated popul ...

shipyard on 6 May 1964, was launched on 21 December 1964 and was commissioned on 9 September 1965. She had the

pennant number In the Royal Navy and other navies of Europe and the Commonwealth of Nations, ships are identified by pennant number (an internationalisation of ''pendant number'', which it was called before 1948). Historically, naval ships flew a flag that iden ...

A133. ''Hecla'' was long, with a

beam Beam may refer to: Streams of particles or energy *Light beam, or beam of light, a directional projection of light energy **Laser beam *Particle beam, a stream of charged or neutral particles **Charged particle beam, a spatially localized grou ...

of and a draught of .

Displacement Displacement may refer to: Physical sciences Mathematics and Physics *Displacement (geometry), is the difference between the final and initial position of a point trajectory (for instance, the center of mass of a moving object). The actual path ...

was light and full load, with a

gross tonnage Gross tonnage (GT, G.T. or gt) is a nonlinear measure of a ship's overall internal volume. Gross tonnage is different from gross register tonnage. Neither gross tonnage nor gross register tonnage should be confused with measures of mass or weigh ...

of 2,898. She had diesel-electric propulsion, with three Paxman Ventura 12-cylinder

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-call ...

s rated at powering two electric motors, rated at a total of and driving one propeller shaft, giving a speed of . She had a range of at a speed of and at . The ship had a complement of 127 officers and other ranks. She was fitted with a hangar and helideck aft to allow operation of a single

Westland Wasp The Westland Wasp is a small 1960s British turbine powered, shipboard anti-submarine helicopter. Produced by Westland Helicopters, it came from the same P.531 programme as the British Army Westland Scout, and is based on the earlier piston-e ...

helicopter, while two surveying launches were carried.

Service

In 1982, ''Hecla'' was used as an ambulance ship for the duration of the

Falklands War The Falklands War ( es, link=no, Guerra de las Malvinas) was a ten-week undeclared war between Argentina and the United Kingdom in 1982 over two British dependent territories in the South Atlantic: the Falkland Islands and its territorial de ...

. In this role, she ferried wounded from both sides to the main

hospital ship A hospital ship is a ship designated for primary function as a floating medical treatment facility or hospital. Most are operated by the military forces (mostly navies) of various countries, as they are intended to be used in or near war zones. ...

, .

Citations

References

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External links

MaritimeQuest HMS Hecla A-133 pages
{{DEFAULTSORT:Hecla (A133) 1964 ships Ships built on the River Clyde Hecla-class survey vessels Falklands War naval ships of the United Kingdom Hospital ships of the Royal Navy Hospital ships during the Falklands War