Heavy-Lift Vessel
A Heavy-Lift Vessel is a ship purpose-built to carry exceptionally heavy, large or oversized cargo that ordinary ships cannot handle — such as port cranes, industrial modules, offshore structures, yachts, other vessels, and complete plant components. Many are fitted with their own very high-capacity cranes (able to lift hundreds or even thousands of tonnes), so they can load and discharge where shore cranes are inadequate or absent.
A distinct type, the semi-submersible heavy-lift vessel, can partially submerge its deck to float huge cargoes (oil rigs, damaged ships, other vessels) on and off — “float-on/float-off”. Heavy-lift vessels are central to project and heavy-lift logistics, working with break-bulk, out-of-gauge and flat-rack cargo on major industrial, energy and infrastructure projects, and to specialised marine transport and salvage. They demand meticulous engineering, stowage and lifting planning, and represent the high end of specialised ocean transport.
When cargo is too big or heavy for any normal ship — an oil rig, a harbour crane, another vessel — the heavy-lift vessel is the answer, carrying it on deck or floating it aboard a submerged one. These ships are the backbone of project and heavy-lift logistics, enabling the movement of the massive components behind energy and infrastructure worldwide.
What is a semi-submersible heavy-lift vessel?
A ship that partially submerges its deck to float huge cargoes — oil rigs, other ships — on and off, known as float-on/float-off.
What cargo do heavy-lift vessels carry?
Extremely heavy or oversized items: port cranes, industrial modules, offshore structures, yachts and even other vessels.