The Castoro Sei (Italian for Beaver Six) is a column stabilized semi-submersible pipelay vessel. She has an overall length of 152 metres (499 ft), a width of 70.5 metres (231 ft) and an operating draught of 7.8 to 15.5 metres (26 to 51 ft).
The Castoro Sei in the Baltic Sea, south-east of Gotland on contract to Nord Stream, March 2011
|Port of registry:||
|Laid down:||20 May 1975|
|Identification:||Callsign C6DF4IMO number: 8758603 MMSI number: 308162000|
|Length:||152 m (499 ft)|
|Beam:||70.5 m (231 ft)|
|Draught:||15.5 m (51 ft)|
|Depth:||29.8 m (98 ft)|
|Speed:||5.8 knots (10.7 km/h; 6.7 mph)|
The Castoro Sei is equipped with 2 rotating gantry cranes 134 tonnes capacity, three 130 tonnes pipe tensioners and a 400 tonnes abandon and recovery winch for pipelaying. She provides accommodation for 354 people.
The firing line comprises the fixed pipelay ramp, enclosed in the central housing, running along the longitudinal centreline of the vessel. It is connected to an internal and external ramp, both of which have adjustable inclination to facilitate pipelay in varying water depths. A ramp extension unit is available for use in deep water or for severe seabed conditions.
She has been used for laying a number of pipelines in the Black Sea, North Sea and Mediterranean Sea, including Blue Stream, Greenstream, Medgaz, Trans-Mediterranean, Europipe II, and BBL pipelines. The vessel is also deployed for laying the Nord Stream pipeline in the Baltic Sea.
- "Castoro Sei". Saipem. Retrieved 2010-03-28.
- "Castoro Sei". Marine Tracker. Retrieved 2010-03-28.
- "Libyan Gas Transmission System" (PDF). Royal Boskalis Westminster. Retrieved 2009-07-29. Cite journal requires
- "Update on MEDGAZ offshore pipeline construction works". Steel Guru. 2008-12-28. Archived from the original on 2008-12-29. Retrieved 2010-03-28.
- "Europipe II fully laid" (Press release). Statoil. 1999-06-04. Retrieved 2010-01-29.
- "BBL Company Offshore" (Press release). BBL Company. 2011. Archived from the original on 2011-09-17. Retrieved 2011-10-08.
- Alla Petrova (2010-03-26). "First Nord Stream pipelay vessel enters Baltic Sea". The Baltic Course. Retrieved 2010-03-28.
|Wikimedia Commons has media related to Castoro Sei (ship, 1978).|