Hermod (ship)
The Hermod is one of the largest offshore crane vessels in the world.
It was built in Japan in 1978 by Mitsui Engineering & Shipbuilding Company Ltd. The semi-submersible vessel is 505 feet long and 282 feet wide. Its draft ranges from 36 feet during transits to a deep draft of 82 feet during lifting which increases the stability. The Hermod is capable of a tandem lift of 8,100 t (9,000 short tons).[1]
Contents
Dimensions
Length overall 154 m 505 ft
Length of vessel 137 m 450 ft
Width 86 m 282 ft
Depth to workdeck 42 m 138 ft
Draft 11.5 - 28.2 m 38 - 92 ft
GRT 73,877 t -
NRT 22,166 t -
Cranes
Portside Crane Main hoist guyed 4,000 st 26 - 39 m 86 - 128 ft
Main hoist revolving 3,000 st 26 - 30.5 m 86 - 100 ft
Auxiliary hoist 660 st 29.6 - 81 m 97 - 266 ft
Whip hoist 80 st 33.9 - 110 m 111 - 361 ft
Main hoist lifting height 92 m (302 ft) above work deck.
Lowering depth of auxiliary hoist up to 3,000 m (10,000 ft) below work deck at minimum radius.
Starboard Crane Main hoist guyed 5,000 st 24 - 40 m 80 - 131 ft
Main hoist revolving 5,000 st 24 - 32 m 80 - 105 ft
1st Auxiliary hoist 1,000 st 27.2 - 80 m 89 - 262 ft
2nd Auxiliary hoist 660 st 30.8 - 101 m 101 - 331 ft
Whip hoist 300 st 34.4 - 113.2 m 113 - 371 ft
Main hoist lifting height 81 m (266 ft) above work deck lowering depth of auxiliary hoist up to 3,000 m (10,000 ft) below work deck at minimum radius.
Tandem Lift Main hoist 8,100 tons at 39 meters (128 ft) radius.
Accommodation / Helicopter Deck
The living quarters are equipped to accommodate 336 men. All quarters have heating and air conditioning facilities. The helicopter deck is suitable for a Sikorsky 61-N.
Propulsion / Power
Propulsion by two electrically driven, controllable pitch propellers of 4,400 kW each aft and two electrically driven, retractable, controllable pitch thruster of 1,470 kW each forward. Power supply by seven diesel driven main generators of 2,765 kW each.
Mooring System
12 Delta Flipper anchors of 22.5 tons each, on wire ropes of 4,500 meters (15,000 ft) long. Minimum breaking strength 386 t.
Deck Load / Transit Speed
Deck load capacity 20 tons/square meter
Total deck load capacity 8,000 tons
Transit speed with 8,000 tons deck load 6 knots at 11.5 meters (38 ft) draft.
