The Boka Vanguard, earlier called the Dockwise Vanguard, is a powerful vessel, believed to be the biggest semi-submersible heavy lift ship in the world. Though it cannot be called a salvage vessel in the traditional sense of possessing cranes for wreck removal, its unique capabilities make it a vital asset in large-scale marine operations, like certain aspects of salvage, especially transport of damaged or very large ships and offshore structures.
It is owned and operated by Royal Boskalis Westminster N.V. (Boskalis), a Dutch global maritime services company, which acquired it from its original owner in 2013.
Boka Vanguard is 275 m long and was recently widened to more than 75 m in the 2025 refit. Its depth to the main deck is 15.50 m, and submerged draught is up to 31 m.
It has a gross tonnage of 91,784 tonnes and a deadweight of 116,173 tonnes, allowing it to carry cargoes up to 110,000 to 117,000 metric tonnes.
Boka Vanguard was constructed in 2012
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