Hermod (ship)

SSCV Hermod was a semi-submersible crane vessel operated by Heerema Marine Contractors.

Hermod in Rotterdam (2014)
History
NameHermod
NamesakeHermóðr (figure in Norse mythology)
OperatorHeerema Marine Contractors
BuilderMitsui Engineering & Shipbuilding[1]
Completed1979
Decommissioned2017
Identification
FateScrapped
General characteristics
Class and typesemi-submersible crane vessel
Tonnage73,877 GRT; 22,166 NT
LengthLOA 154 m (505 ft)
Beam86 m (282 ft 2 in)
Draft11.5 to 28.2 m (38 to 93 ft)
Depth42 m (138 ft)
Installed power7 × diesel generators of 2,765 kW each.
Propulsion
  • 2 × controllable pitch propellers
  • 2 × forward thrusters
Speed6 knots (11 km/h; 6.9 mph) loaded at 11.5 m (38 ft) draft
Complement336 berths

History

Semi submersible crane vessel (SSCV) Hermod was constructed in 1979 by Mitsui Engineering & Shipbuilding Co., Ltd. Hermod and sister vessel, Balder were the world's first semi-submersible crane vessels.[3] In the early 1980s these vessels set several lift records while operating in the North Sea.[4]

Hermod being loaded on Dockwise Vanguard for transport to scrapyard, 15 September 2017

Hermod was retired at the end of 2017. She was loaded on Dockwise Vanguard and taken to Dinghai District, Zhejiang province for scrapping at Zhoushan Changhong International Ship Recycling. 98% of the ship's materials will be reused.[5][6]

Design

The hull consisted of two floaters with three columns each. The transit draught of 12 meters was normally ballasted down to 25 meters for lifting operations; at that load, the floaters (with a draught of 12 meters) were well-submerged, reducing the effect of waves and swell.

Propulsion was by two controllable pitch propellers and two forward, retractable, controllable pitch thrusters. The helicopter deck was capable of sustaining a Sikorsky 61-N. Up to 336 people could be supported in the air conditioned living quarters.

Cranes

The Hermod had two cranes at the stern. Originally the starboard-side crane was rated at 3,000 short tons (2,700 t) and the port-side at 2,000 short tons (1,800 t).[4] In 1984, the lifting capacities were upgraded to 5,000 and 4,000 short tons (4,500 and 3,600 t) respectively.[1] The main hoist could lift 92 m (302 ft) above the work deck. The auxiliary hoists could lower to a depth of 3,000 metres (9,800 ft) below the work deck. A tandem lift using the main hoists could lift 9,000 short tons (8,200 t) at a 39 m (128 ft) radius.

Footnotes
  1. "SSCV Hermod". Heerema Marine Contractors. Archived from the original on 24 July 2011. Retrieved 26 March 2011.
  2. "SSCV Hermod - 7710214". Marine Traffic. Retrieved 26 March 2011.
  3. "History". Heerema Marine Contractors. Archived from the original on 24 July 2011. Retrieved 26 March 2011.
  4. "SSCV Hermod". GustoMSC. Archived from the original (PDF) on 1 October 2010. Retrieved 26 March 2011.
  5. "Well-deserved Retirement of Hermod" (Press release). Heerema. 7 September 2017. Retrieved 20 March 2018.
  6. O'Cinneide, Eoin (7 September 2017). "Heerema sending Hermod for scrap". Upstream. Retrieved 20 March 2018.
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