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Semi-submersible heavy transport vessels

Boskalis operates the largest fleet of specialized semi-submersible heavy transport vessels in the world. These can be used in a number of specific offshore roles such as the transport of offshore drilling rigs, oil production platforms, floating production, storage and offloading units (FPSOs) and other exceptionally heavy cargoes. Various vessels are suitable for float over installation of topsides and Forte is capable to perform float overs on DP2.

The vessels have excellent stability and seagoing characteristics. With 11 vessels in operation, we are in an excellent position to deliver the right vessel at the right time and location.

The Boka Vanguard is our state-of-the-art semi-submersible heavy transport vessel. Due to her ‘bowless’ design she can accommodate overhang on both bow and stern and has a deadweight capacity of 117,000 tons.

Heavy transport vessel - capabilities

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BOKA Vanguard

Heavy transport vessel

117,000 Tons

White Marlin

Heavy transport vessel

72,000 Tons

Mighty Servant 3

Heavy transport vessel

27,720 Tons


Heavy transport vessel

48,000 Tons


Heavy transport vessel

54,013 Tons


Heavy transport vessel

53,868 Tons