'Far Samson' breaks bollard pull records

01 May 2009

Far Samson has a two level afterdeck and 'A' frame for launching towed sub-sea ploughs.

Farstad Shipping of Norway has put into service ‘ Far Samson’ , the most powerful offshore vessel in the world in terms of bollard pull.

In the towage industry bollard pull is the prime criteria by which a tug’s performance is measured. In the case of Far Samson, a bollard pull of 423 tons was achieved on trials but this is no ordinary tug. The vessel carries a ‘Tug’ notation as part of its comprehensive DNV classification but any comparison with a normal tug ends there. The multifunctional ship is capable of carrying out heavy ploughing operations for pipes and cables on the seabed, cutting trenches in the seabed in waters up to 1,000m deep.

Far Samson was built by STX Europe Langsten, Norway to a special UT 761 CD design developed and equipped by Rolls-Royce to incorporate a wide range of new technology. In addition to ploughing, the vessel can undertake subsea installation work in ultra deep water, towing, remote underwater (ROV) duties and other challenging subsea operations.

Far Samson is 121.5m long with a 26m beam, 15,260 gross tons and has a hull strengthened to Ice Class 1B. The propulsion system, combining diesel-electric and diesel mechanical transmission, provides optimal operating flexibility, fuel economy and minimum exhaust emissions. The continuous bollard pull of 423 tons was logged using all available power and more than 377 tons using just the main propulsion system. A maximum speed of 19 knots was also achieved. To attain this performance, the vessel has twin controllable pitch propellers of 5.6m diameter, each weighing 16 tons and rotating within fixed nozzles. Twin ‘Becker style rudders are fitted along with an outfit of six thrusters of various types to aid maneuverability and station keeping.

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