Aerial view of a heavylift deck carrier loaded with eight wind turbine monopiles, leaving a port basin escorted by tugs

Marine heavy transportOffshore project logistics

Where weight meets water.ToleranceTrustTiming

Trident Heavylift moves the largest things industry builds across open water: port cranes, wind farm foundations, platforms, modules and entire fleets of working vessels, carried on heavylift deck carriers and semi-submersible vessels.

Monopiles for an offshore wind farm, outbound on a heavylift deck carrier

The lattice legs of a jack-up rig rising above the deck of the vessel that carries it
Jack-up rig in transit, legs raised

The field

Displacement

Some structures are born too large for the place they are needed. They are built in one hemisphere and spend their working lives in another.

A quay crane leaves the yard fully erected, taller than the terminal it will serve. Foundations for a wind farm arrive by the dozen, each one heavier than a train. A dredging fleet changes continents in a single voyage, with its tugs and pontoons stacked on one deck. Between the yard and the work lies only water, and water is the one road wide enough.

Marine heavy transport is the craft of that road. It is measured in tonnes by the ten thousand and in margins of a few centimetres, in weather windows, tide tables and sea states. Done well, it goes unnoticed. Something enormous is simply somewhere else.

To carry the heaviest things, a vessel must first learn to submerge.

A semi-submersible heavy transport vessel loaded with yellow transition pieces for an offshore wind farm, mirrored in still water
Transition pieces for an offshore wind farm, loaded on a semi-submersible vessel

Heavylift deck carriers

Port cranes, foundations, monopiles, modules and plant, lifted, rolled or skidded aboard and carried at full sea speed.

Semi-submersible heavy transport

Rigs, hulls, floating foundations and entire fleets of smaller craft, floated on and floated off.

Offshore energy & heavy engineering logistics

Routes, vessels, ports and schedules, managed as a single plan from the fabrication yard to the site.

Manifest

What crosses the water

Port & terminal
Ship-to-shore cranesRTG cranesRail-mounted gantriesBulk handling plant
Offshore wind
MonopilesTransition piecesJacketsFloating wind foundationsOffshore substations
Marine plant
DredgersPiling bargesCrane bargesPontoonsTugsWorkboats
Oil & gas
Jack-up rigsTopsidesProcess modulesHulls
Heavy industry
Bridge spansReactors & columnsPlant modules

Typical passages

Cargo the size of buildings

Representative project types from across marine heavy transport.

Four ship-to-shore container cranes arriving fully erected on the deck of a heavylift deck carrier, about to be rolled ashore at a container terminal
Heavylift deck carrier

Ship-to-shore cranes

Quay cranes shipped fully erected from the fabrication yard and rolled straight onto the rails of a new terminal.

A semi-submersible vessel carrying a stack of river barges, pontoons and workboats on its deck
Semi-submersible

A fleet in one voyage

Barges, pontoons, workboats and dredgers loaded together and delivered to a new project as a complete working fleet.

A row of yellow lattice jacket foundations standing on an orange deck barge
Deck barge

Jacket foundations

Wind farm jackets loaded in series, so that installation offshore never waits for steel.

A floating wind turbine on a yellow semi-submersible foundation at sea
Semi-submersible & tow

Floating wind foundations

Floating hulls for deep-water wind, carried or towed from the assembly port to the field.

An offshore substation topside and its yellow jacket foundation on a large deck barge under tow
Deck barge & tow

Substation and jacket

Topside and foundation shipped together for an offshore wind farm.

An integrated process module sitting on the open deck of a semi-submersible heavy transport vessel
Semi-submersible

Integrated topside module

A complete process module carried from fabrication yard to field, set down ready to lift.

Enquiries

Bring us the weight.

For cargo enquiries, charters and partnerships, write to us.