Mark 8 Landing Craft Tank

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HMAV Abbeville beached in Village Bay, St Kilda, Scotland.
Class overview
NameMark 8 Landing Craft Tank
BuildersSee Construction
Operators
Planned187
Completed30 for military service
Cancelled151 (6 completed and sold into civilian service)
General characteristics
TypeLanding craft tank
Displacement1,017 tons maximum
Length
  • 225 ft (69 m) between perpendiculars
  • 231.2 ft (70.5 m) overall
Beam38 ft (12 m)
Draught4 feet 8 inches (1.42 m) forward, 5 feet 2 inches (1.57 m) aft at 880 tons displacement
Propulsion
  • 4 × Davey Paxman 12TPM engines
  • 1,600 brake horsepower (1,200 kW) (capped maximum)
  • 2 shafts
Speed
  • 8 knots (15 km/h; 9.2 mph) cruising
  • 12.5 knots (23.2 km/h; 14.4 mph) maximum
Range
  • 4,000 nautical miles (7,400 km; 4,600 mi) at 8 knots (15 km/h; 9.2 mph)
  • 2,500 nautical miles (4,600 km; 2,900 mi) at 10 knots (19 km/h; 12 mph)
Capacity8 x 30-ton tanks, 13 x 3-ton trucks, or 350 tons of cargo
Troops42 (vehicle crews)
Complement
  • 25 (designed)
  • 33 to 37 (as of 1968)
Armament4 x
20 mm Oerlikons

The Mark 8 Landing Craft Tank (also referred to as the LCT (8) or LCT Mark VIII) were landing craft tank ships operated by the British Armed Forces. The vessels were based on an American design, but improved into ocean-going vessels capable of sailing to and operating in the Far East.

Although 187 vessels were ordered, the end of the

Military of Comoros
.

During their service life, vessels of the class operated during the

Indonesian Confrontation, and were involved in the setup and supply to guided weapons bases in the Hebrides as part of Operation Hardrock
, primarily ferrying equipment from Cairnryan, near Stranraer, to the remote island of St. Kilda.

Eventually, they were replaced by Round Table class ships.[1]

Design

In October 1943, the

Landing Ship, Infantry convoys.[3][4] Greater ranges and more lengthy periods of sustained operation than in the European or Mediterranean theatres would require a larger vessel with better seakeeping ability.[2] Design and capabilities were heavily influenced by the United States' Mark 7 LCT (which was later re-categorised as Landing Ship Medium), which was capable of transporting multiple tanks over large distances.[5] The Mark 8 was a synthesis of the best qualities of previous amphibious warfare vessels: the design was based on an enlarged version of the Mark 4 LCT, incorporating its light construction and suitability for mass-production, while including the robustness of the Mark 3 design, and adopting the bow layout and other elements from the Mark 2 Landing Ship Tank.[2][3]

Polaris missile
being unloaded from the tank deck of HMAV Abbeville in 1977

The vessels were 225 feet (69 m) long

between perpendiculars and 231.2 feet (70.5 m) long overall, with a beam of 38 feet (12 m).[6] Although retaining the open tank deck of previous LCT designs, the Mark 8 was protected by a taller bow section, which was fitted with powered doors and ramp.[4] The capacity was eight 30-ton tanks, up to 13 fully loaded 3-ton trucks, or 350 tons of cargo.[3][7] Maximum displacement and draught varied depending on the loadout: trucks would result in a 650-ton displacement, 3-foot (0.91 m) draught at the bow, and 4-foot-8-inch (1.42 m) draught at the stern; for tanks, it was 780 tons, 3 feet 9 inches (1.14 m) forward, and 5 feet (1.5 m) aft; while a full load of cargo resulted in a displacement of 880 tons, and draughts of 4 feet 8 inches (1.42 m) and 5 feet 2 inches (1.57 m).[3] Maximum displacement was 1,017 tons.[6] The deeper draughts compared to previous vessels helped improve seakeeping.[2]

An enlarged engine room compared to previous designs allowed the installation of four 460 shaft horsepower (340 kW), 12-cylinder Davey Paxman 12TPM diesel engines, coupled in two tandem sets to drive the two propeller shafts.[2][7][8] These had a maximum combined output of 1,840 brake horsepower (1,370 kW) (roughly doubling that of previous LCTs), although output was capped at 1,600 brake horsepower (1,200 kW).[2][4] Cruising speed was 8 knots (15 km/h; 9.2 mph), with a maximum speed of 12.5 knots (23.2 km/h; 14.4 mph).[6][7] The landing craft could travel 4,000 nautical miles (7,400 km; 4,600 mi) at cruising speed, or 2,500 nautical miles (4,600 km; 2,900 mi) at 10 knots (19 km/h; 12 mph).[6][7]

The expanded engine room required a lengthening of the

20 mm Oerlikon guns.[7] There were also plans to fit some of the vessels with a Hedgerow:[3] a modified Hedgehog anti-submarine mortar which would be fired to clear mines and obstructions from beaches prior to the landing of troops.[citation needed] The bridge, wireless telegraphy office, and gun platforms were armoured with 0.25-inch (6.4 mm), 15-pound (6.8 kg) D1 HT plating.[2][3][7]

Construction

187 vessels were ordered.[9] They were identified with the pennant numbers L4001 through to L4187.[7] 96 were ordered in the initial batch on 7 April 1944.[10] This was followed by orders of 9 at an unknown date, 22 on 9 October 1944, batches of 20, 16, and 12 at unknown dates during late 1944, then the final 12 on 6 January 1945.[11]

Shipyards and companies involved in the vessels' construction included

Thornaby, and Appleby-Frodingham.[13] Building designs were provided for both riveted and welded versions.[2]

The first vessel was completed in June 1945.[9] 30 were completed for the Royal Navy before the end of World War II meant that the vessels were no longer required; none of those completed saw wartime service.[4][9] Of the remaining 157, 6 were sold into civilian service (4 directly, 2 to intermediate parties for conversion), while the rest were cancelled, scrapped in their incomplete state, or otherwise disposed of.[9][12]

Operational history

Royal Navy

HMS Bastion beached and with her bow doors open

Nine ships in the class (HM Ships Redoubt, Rampart, Citadel, Parapet, Bastion, Counterguard, Portcullis, Sallyport, and Buttress) served during the 1956 Suez Crisis under Royal Navy control,[14] while a tenth (L4086, later named HMAV Arromanches) operated with a civilian crew.[15]

In 1961, Bastion, Redoubt, and the landing ship tank HMS Striker transported heavy stores and vehicles from Bahrain to Kuwait in support of Operation Vantage.[16]

Army

The Suez Crisis highlighted the Army's need to train landing craft crews to respond to similar emergencies.

Fort Victoria on the Isle of Wight and later in Portsmouth, began running LCT training courses and supplied the vessels with crews (men on their National Service) until the unit closed in 1962.[17]

In 1957–58, several of the LCTs took part in Operation Hardrock, a joint Army/RAF operation to create a guided weapons tracking station on the island of St Kilda, Scotland in the Hebrides.[18] The vessels made exploratory voyages and subsequently delivered men and equipment from the mainland base at Cairnryan, at Loch Ryan, to islands like St Kilda, South Ford, and Lochboisdale.[19] In the following years, they made supply runs from their base at Cairnryan to the islands.[20] Landings were hazardous, due to weather and beach conditions, and on one occasion, Abbeville became grounded at Village Bay in St Kilda for three days.[20]

In 1960, three of the LCTs (Ardennes, Agedabia and Arromanches) were transferred to

Indonesian Confrontation in 1962. Two more LCTs (Antwerp and Arakan) were despatched to the region the following year.[22]

In 1965/66, L4061 RASCV/HMAV Audemer transported a 52-ton GEC alternator (combined weight with the transporter was 82 tons), as well as a transformer and other equipment, to Jersey in the Channel Islands. The craft landed at St Aubins Bay, just below La Haule slip. This was part of the installation of the first 30MW steam turbine at the then under-construction La Collette Power Station in St Helier.

HMAV Abbeville. Note the Royal Corps of Transport (RCT) marking under the pennant number.

When the LCTs first entered service with the British Army, they were designated as Royal Army Service Corps Vessels (RASCV). In 1965, the RASC was amalgamated with the transportation arm of the

Royal Warrant dictated that all RCT vessels would have their prefix changed to Her Majesty's Army Vessel (HMAV).[24]

Other forces and civilian service

During the late 1950s, Jawada was loaned to the

Qatar Petroleum Company.[25] The landing craft was briefly recommissioned during late 1956 and early 1957 to serve as a tender to the cruiser HMS Superb, which was visiting Bahrain for amphibious warfare exercises.[25]

Buttress was sold to the

Singaporean Navy in 1970, operating as Cairn Hill and Tanglin.[28][29]

Vessels in class

Pennant number Name Notes
L4001 HMS Redoubt Was involved in the 1956 Suez Crisis.[14] Sold January 1966 as a train ferry and renamed Dimitris.[30]
L4002 RASCV/HMAV Agheila Deployed to Aden in 1965.[31]
L4025 – Struck from service in 1960.[6]
L4037 HMS Rampart
HMAV Akyab 		As HMS Rampart,
bridge to improve visibility.[32] The aft lattice mast was also larger.[6]
L4038 HMS Citadel Was involved in the 1956 Suez Crisis.[14] Converted into a fleet degaussing vessel prior to 1968.[6] Marked for disposal in 1968.[34] Sold into mercantile service in 1971.[33]
L4039 HMS Parapet Was involved in the 1956 Suez Crisis.[14] Sold into civilian service at Sark in 1966.[6]
L4040 HMS Bastion Was involved in the 1956 Suez Crisis.[14] Supported Operation Vantage in 1961.[16] Sold to Zambia on 15 September 1966.[6]
L4041 RASCV/HMAV Abbeville Ran aground at Village Bay in St Kilda for three days in 1957, but subsequently re-floated.[20]
L4042 – Struck from service in 1958.[6]
L4043 HMS Counterguard Was involved in the 1956 Suez Crisis.[14] Sold to Malaysia in 1965 and renamed Sri Langkawi.[6] Sold off for disposal in February 1968.[27]
L4044 HMS Portcullis Was involved in the 1956 Suez Crisis.[14] Converted into a fleet degaussing unit prior to 1968.[6] Marked for disposal in 1968.[34] Sold to Pounds of Belfast and scrapped in 1973.[33]
L4045 – Struck from service in 1958.[6]
L4049 – Struck from service in 1960.[6]
L4050 – Struck from service in 1960.[33]
L4061 RASCV/HMAV Audemer Superstructure enlarged to house extra staff when the vessel was converted to a Squadron HQ in 1961.[35]
L4062 RASCV/HMAV Aachen Sold into civilian service in 1976.[33]
L4063 HMS Jawada Loaned to a civilian company, later disposed of in Bahrain.[6] Struck from service in 1960.[6]
L4064 HMS Sallyport Was involved in the 1956 Suez Crisis.[14] Sold in 1966 in Malta to a Greek shipping company and renamed Faedra.[33][36]
L4073 RASCV/HMAV Ardennes After being deployed to Singapore in 1960.[37]

the vessel was sold to the Singaporean Navy in 1970.[33] It remained in service as the Singapore naval vessel Cairn Hill until 1975.[29]

L4074 RASCV/HMAV Antwerp Deployed to the Far East during the Indonesian Confrontation.[22] Remained in service with the Army until 1976.[38]
L4085 RASCV/HMAV Agedabia
L4086 RASCV/HMAV Arromanches Distinguishable from other units in the class by a larger lattice mast.[6] Took part in the 1956 Suez Crisis with a civilian crew.[15] Sold to the Singaporean Navy in 1970 and operated as the Singaporean naval vessel Tanglin.[26] Sold into civilian service as Sumber Tunas IV in 1988.[26]
L4097 RASCV/HMAV Andalsnes Was used on 8 July 1967 to transport a scanner and other Outside Broadcast equipment when the BBC made its world famous documentary about climbers on The Old Man of Hoy.
L4098 – Struck from service in 1960.[6]
L4099 HMS Buttress Was involved in the 1956 Suez Crisis.
Military of Comoros in 1976, and operated as the naval vessel Ville de Nimachova.[26] Sold on again in 1994.[39]
L4128 RASCV/HMAV Arezzo Deployed to Bahrain in 1965.[31] Was wrecked in The Strait of Malacca between The Malay Peninsula and Sumatra in April 1973
L4148 – Struck from service in 1958.[6]
L4156 – Struck from service in 1958.[6]
L4164 RASCV/HMAV Arakan Sold into civilian service in 1988 and operated as Sumber Tunas VI.[13]
L4165 – Struck from service in 1958.[6]

Citations

  1. ^ "RFA Sir Lancelot". RFA Historical Society. Retrieved 5 August 2017.
  2. ^ a b c d e f g h i Brown (ed.), The Design and Construction of British Warships, p. 51
  3. ^ a b c d e f g US Division of Naval Intelligence, Allied Landing Craft of World War II, Supplement No. 1, p. 37
  4. ^ a b c d e Lenton, British and Empire Warships of the Second World War, p. 458
  5. ^ Bishop, The Encyclopaedia of Weapons of WWII, p. 536
  6. ^ a b c d e f g h i j k l m n o p q r s t u v w x y z Blackman (ed.), Jane's Fighting Ships, 1968–69, p. 320
  7. ^ a b c d e f g h i Lenton, British and Empire Warships of the Second World War, p. 460
  8. ^ Carr, Paxman and the Royal Navy
  9. ^ a b c d Brown (ed.), The Design and Construction of British Warships, p. 52
  10. ^ Lenton, British and Empire Warships of the Second World War, pp. 484–6
  11. ^ Lenton, British and Empire Warships of the Second World War, pp. 486–7
  12. ^ a b Lenton, British and Empire Warships of the Second World War, pp. 484–7
  13. ^ a b Lenton, British and Empire Warships of the Second World War, p. 487
  14. ^ a b c d e f g h i j k Paul & Sprint, British Units involved in the Suez crisis
  15. ^ a b c d Habesch, The Army's Navy, p. 142
  16. ^ a b c Hobbs, in Stevens & Reeve, Sea Power ashore and in the air, p. 207
  17. ^ a b Cantwell, Fort Victoria p. 44
  18. ^ Habesch, The Army's Navy, p. 143
  19. ^ Habesch, The Army's Navy, pp. 143–4
  20. ^ a b c Habesch, The Army's Navy, p. 144
  21. ^ Habesch, The Army's Navy, p. 147
  22. ^ a b Habesch, The Army's Navy, p. 149
  23. ^ Habesch, The Army's Navy, p. 151
  24. ^ Habesch, The Army's Navy, p. 154
  25. ^ a b Boniface, HMS Superb, p. 62
  26. ^ a b c d e f Lenton, British and Empire Warships of the Second World War, p. 486
  27. ^ a b Blackman (ed.), Jane's Fighting Ships, 1968–69, p. 187
  28. ^ Lenton, British and Empire Warships of the Second World War, pp. 485–6
  29. ^ a b Habesch, The Army's Navy, pp. 161–2
  30. ^ Colledge & Warlow, Ships of the Royal Navy, p. 334.
  31. ^ a b Habesch, The Army's Navy, p. 151
  32. ^ a b Habesch, The Army's Navy, p. 153
  33. ^ a b c d e f g Lenton, British and Empire Warships of the Second World War, p. 485
  34. ^ a b Warships, Hansard
  35. ^ Habesch, The Army's Navy, p. 148
  36. ^ Colledge & Warlow, Ships of the Royal Navy, p. 355.
  37. ^ Habesch the Armys Navy p 147
  38. ^ Habesch, The Army's Navy, p. 167
  39. ^ Colledge & Warlow, Ships of the Royal Navy, p. 60.

References

Books
Websites
Wikimedia Commons has media related to:
Mark 8 Landing Craft Tank (category)
  • Pathé Newsreels
    • Chieftains for Germany – A 1967 newsreel showing the loading of
      Chieftain tanks
      aboard HMAV Andalsnes for delivery to British units stationed in Germany.
    • Army Transport Display – A 1967 newsreel depicting the operations of several units, including the LCTs Akyab and Audemer, during an
      amphibious landing
      demonstration.
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