SSCV Thialf
Thialf in a Norwegian fjord
- DB -102
- McDermott Derrick Barge No.. 102
2 × 7,100 t to the main cranes
DPS class III
To Boeing CH -47 Chinook
Lloyd 's Register of Shipping
IMO number: 8757740
The Thialf is the most powerful floating crane in the world and is mainly used as a support ship for the construction of offshore structures. The ship is since 1997 owned by the Dutch company Heerema Marine Contractors (HMC ). The ship is also called SSCV Thialf or DCV Thialf; SSCV here means Semi- Submersible Crane Vessel ( German: " semi -submersible crane vessel - " ), DCV stands for Deepwater Construction Vessel ( German: " deepwater construction vessel" ). The name is derived from Thialf " Thialfi ," the servant of the Germanic god of thunder, Thor.
History
The Thialf in 1985, the company built for McDermott by Mitsui Engineering & Shipbuilding Co., a Japanese Mitsui Group. The keel was laid on 12 April 1985, the ship was delivered on 1 December 1985. The ship sailed as McDermott Derrick Barge No. to 22 November 1996. 102 and then to March 6, 1998 as DB -102 ( Derrick Barge 102).
The ship is now officially operated by the Thialf Shipping Inc., a company that is registered in the Netherlands Antilles, and sailing under the flag of Panama.
Construction and performance
The ship is designed as a semi-submersible and can vary its depth from 11.8 to 31.6 meters (m). The hull of the Thialf consists of two floating bodies that carry the superstructure on four pillars.
Cranes
Both cranes have an approved capacity of 7,100 metric tons (t ), thus resulting in a total capacity of 14,200 t in the double stroke at a radius of up to 31.2 m results. The cranes were tested with a load of 7,810 t each. The Thialf thus achieves a maximum load moment of about 443,000 metric tones.
A world record for the highest load that has ever lifted a floating crane, the Thialf turned on in the year 2000, when the 11,800 -ton deck of Shell Shearwater platform was installed. The record was surpassed in 2004 by the Saipem 7000, which picked up a deck of drilling platform of Sabratha in the Mediterranean with a weight of 12,100 tonnes.
Dynamic positioning, drive and anchoring system
By means of a system for dynamic positioning of class III can hold their position Thialf even under adverse environmental conditions. For two manufactured by Kongsberg systems of the ADP 503 and ADP are used 311. The positioning is done with six retractable propeller gondolas with a capacity of 5500 kilowatts ( kW). To anchor the ship, the twelve 22.5 can be used ton "Flipper Delta " anchor, which are fixed to 2400 m long and 80 millimeters anchor ropes.
Others
The Thialf provides the ability to accommodate up to 736 people who live in heated and air-conditioned cabins. The landing deck for helicopters is suitable to the size of a Boeing CH -47 Chinook.
Known projects
- During construction of the Erasmus Bridge in Rotterdam, via the Nieuwe Maas Thialf installed the nearly 140 meters high pylon.
- Disassembly of the floating oil tanks Brent Spar, which was originally to be sunk, but then moved on through the media-effective occupation by Greenpeace worldwide attention, was carried out in 1998 among other things, using the Thialf.
- The second heaviest ever fine by the Thialf load was a 10,470 -tonne segment of an oil rig, as the block 14 Compliant Piled Tower (CPT ) in the " Benguela, Belize, Lobito and Tomboco " field erected ( BBLT field) off the coast of Angola been.
- In September 2009, the Thialf anchored 40 nautical miles north of the island of Borkum foundations for the offshore wind farm "alpha ventus " in the bottom of the North Sea.
Specifications
- Carrying capacity of the deck: 15 tons per m2
- Total capacity: 12,000 t
- Capacity of the ballast pumps: 20,800 m3 per hour
- Speed : 6 knots with a payload of 12,000 t on the deck and 12.5 m Draft