SSCV ''Hermod'' was a
semi-submersible
Semi-submersible may refer to a self-propelled vessel, such as:
* Heavy-lift ship, which partially submerge to allow their cargo (another ship) to float into place for transport
*Narco-submarine, some of which remained partially on the surface
* ...
crane vessel
A crane vessel, crane ship or floating crane is a ship with a crane specialized in lifting heavy loads. The largest crane vessels are used for offshore construction. Conventional monohulls are used, but the largest crane vessels are often catam ...
operated by
Heerema Marine Contractors
Heerema Marine Contractors (HMC) is a contractor headquartered in the Netherlands most notable for operation of three of the largest crane vessels in the offshore industry.
History
Heerema Marine Contractors was formed in 1948 by Pieter Schelte ...
.
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. In the early 1980s these vessels set several lift records while operating in the North Sea.
''Hermod'' was retired at the end of 2017. She was loaded on ''
Dockwise Vanguard'' and taken to
Dinghai District
() is a district of Zhoushan City made of 128 islands in Zhejiang province, China.The total area is 1,444 square kilometres.The land area is 568.8 square kilometers, the sea area is 875.2 square kilometers, and the coastline is more than 400 kil ...
,
Zhejiang
Zhejiang ( or , ; , Chinese postal romanization, also romanized as Chekiang) is an East China, eastern, coastal Provinces of China, province of the People's Republic of China. Its capital and largest city is Hangzhou, and other notable citie ...
province for scrapping at Zhoushan Changhong International Ship Recycling. 98% of the ship's materials will be reused.
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 and the port-side at .
In 1984, the lifting capacities were upgraded to respectively.
The main hoist could lift above the work deck. The auxiliary hoists could lower to a depth of below the work deck. A tandem lift using the main hoists could lift at a radius.
Footnotes
External links
*
{{DEFAULTSORT:Hermod, SSCV
Semi-submersibles
Ships built by Mitsui Engineering and Shipbuilding
Crane vessels
1979 ships