History
United Kingdom
NameTregenna
NamesakeTregenna
OwnerHain Steam Ship Co
OperatorFoster, Hain & Read (until 1932)
Port of registrySt Ives
Builder
Yard number915
Launched1 May 1919
CompletedJuly 1919
Identification
FateSunk 17 September 1940
General characteristics
Class and typeWar Standard type B
Tonnage5,242 GRT, 3,201 NRT
Length400.1 ft (122.0 m)
Beam52.3 ft (15.9 m)
Draught25 ft 4 in (7.72 m)
Depth28.4 ft (8.7 m)
Installed power517 NHP
Propulsiontriple expansion steam engine
Speed11 knots (20 km/h)
Crew37
Sensors and
processing systems		wireless direction finding
ArmamentDEMS

SS Tregenna was a cargo steamship that was launched in England in 1919 and sunk by a U-boat in the Battle of the Atlantic in 1940 with the loss of 33 of her 37 crew. She was laid down as War Bulldog, but the Hain Steam Ship Co bought her before she was completed and renamed her Tregenna.

Building

William Gray & Company built Tregenna at its shipyard in West Hartlepool. She was built to the Shipping Controller's First World War standard design B.[1] She was launched on 1 May 1919 and completed that July.[2]

Gray's Central Marine Engineering Works in West Hartlepool built Tregenna's three-cylinder triple expansion steam engine. It was rated at 517 NHP[3] and gave her a speed of 11 knots (20 km/h).[4]

Peacetime service

In August 1921 Tregenna reported sighting the wreckage of a SNETA Farman Goliath aircraft that had ditched in the English Channel.[5]

On 7 August 1930 Tregenna ran aground at Alligator Pond, Jamaica.[6] She was refloated on 10 August 1930 and returned to service.[7]

In 1933–34 the call sign GCDX[8] superseded Tregenna's code letters KBSW.[3]

Second World War service

From November 1939 to February 1940 Tregenna sailed from New Zealand via New South Wales and South Africa to Freetown in Sierra Leone, where she joined Convoy SL 18 to return to Liverpool in England. In March and April 1940 she sailed to and from northern Norway. She left Ålesund with Convoy HN 25 on 9 April, the day after the German invasion of Norway began.[9]

From May 1940 Tregenna made transatlantic crossings to bring steel from Philadelphia to South Wales, sailing eastbound in HX convoys from Halifax, Nova Scotia to UK waters. That June she sailed in Convoy HX 49, and discharged her cargo in Swansea.[10]

Loss

On 1 September Tregenna left Philadelphia carrying 8,000 tons of steel bound for Newport.[11] On 5 September she joined Convoy HX 71 from Halifax. HX 91 had nine columns, and Tregenna was the first ship of the ninth column.[12]

On 17 September HX 71 was in the Western Approaches west of Scotland. At 1626 hrs that afternoon U-65 hit Tregenna with one torpedo 78 nautical miles (144 km) northwest of Rockall. Tregenna sank rapidly, killing her Master, 31 members of her crew and a DEMS gunner. Another member of HX 71, the cargo ship Filleigh, rescued four survivors and landed them at Avonmouth.[11]

See also

SS Tregarthen

References

  1. ^ "War A – War B". WW1 Standard Ships. Mariners. Retrieved 10 April 2021.
  2. ^ "Tregenna". Tees Built Ships. Shipping and Shipbuilding Research Trust. Retrieved 10 April 2021.
  3. ^ a b "Steamers & Motorships". Lloyd's Register of Shipping (PDF). Vol. I. London: Lloyd's Register of Shipping. 1932. Retrieved 10 April 2021 – via Southampton City Council.
  4. ^ Allen, Tony; Lettens, Jan (1 December 2018). "SS Tregenna (+1940)". Wrecksite. Retrieved 9 April 2021.
  5. ^ "Wreck of an air mail". The Times. No. 42810. London. 27 August 1921. col F, p. 9.
  6. ^ "Casualty reports". The Times. No. 45587. London. 9 August 1930. col F, p. 19.
  7. ^ "Casualty reports". The Times. No. 45589. London. 12 August 1930. col G, p. 15.
  8. ^ "Steamers & Motorships". Lloyd's Register of Shipping (PDF). Vol. I. London: Lloyd's Register of Shipping. 1934. Retrieved 10 April 2021 – via Southampton City Council.
  9. ^ Hague, Arnold. "Ship Movements". Port Arrivals/ Departures. Don Kindell, Convoyweb. Retrieved 10 April 2021.
  10. ^ Hague, Arnold. "Convoy HX.49". HX Convoy Series. Don Kindell, Convoyweb. Retrieved 10 April 2021.
  11. ^ a b Helgason, Guðmundur. "Tregenna". uboat.net. Retrieved 9 April 2021.
  12. ^ Hague, Arnold. "Convoy HX.71". HX Convoy Series. Don Kindell, Convoyweb. Retrieved 10 April 2021.

58°22′N 15°42′W / 58.367°N 15.700°W / 58.367; -15.700

Categories