This guide explains how each mode works for power equipment and how to choose between them.
Standard containers
Containers suit smaller generator sets, spare parts, control panels and tools. They are widely available, protect cargo from weather and theft, and can move by sea, rail and road without unloading. Most ports handle them routinely.
Check weight and dimensions carefully. A set that just fits through the door may exceed weight limits or need careful blocking and bracing. Containerised generator packages built in a container frame can ship as the container itself.
Flat racks and open tops
Equipment too wide or tall for a closed container may fit on a flat rack or in an open-top container. These keep the cargo within the container system, which helps with scheduling and handling, but leave it exposed to weather and need weatherproof wrapping.
Out-of-gauge containers need special stowage on the vessel and may be accepted only on certain routes. Book early and confirm the port can handle them.
RoRo shipping
Roll-on roll-off vessels carry cargo that can be driven or towed aboard. Trailer-mounted generators and turbines, and equipment loaded on roll trailers, can move this way. RoRo avoids lifting at the port, which reduces handling risk, and cargo sits under deck out of the weather.
RoRo services run on set routes and may not call at every port. Check the destination port’s RoRo facilities and the inland route from there. Mobile turbine trailers are often suited to RoRo because they already sit on wheels.
Breakbulk and heavy lift
Large engines, generators, transformers and turbine skids that cannot go in containers or on RoRo are shipped breakbulk: lifted individually aboard a general cargo or heavy-lift vessel. This mode handles very heavy and large pieces, but each lift carries risk and needs proper lifting points, rigging plans and cradles.
Heavy-lift vessels with their own cranes can serve ports without heavy shore cranes, which is valuable for many African ports. Our article on shipping HFO engines to African mines gives an example.
Preservation for the voyage
Sea air, humidity and temperature swings damage unprotected equipment. Engines, alternators and turbine internals need preservation: corrosion inhibitors, desiccant, sealed openings and moisture barrier wrapping. Breakbulk cargo on deck needs the most protection.
Log humidity where the value of the cargo justifies it. The preservation and storage guide explains the steps.
Ports and inland transport
The best ocean mode is useless if the destination port cannot handle the cargo or the road beyond it cannot carry the load. Check crane capacity, quay strength, storage areas and customs procedures at the port, and survey the inland route for weight limits, bridge clearances and turning radii.
Sometimes a longer sea route to a better-equipped port is faster overall than a shorter route to a port that cannot handle the cargo.
Documentation and customs
Each mode carries its own documents: bills of lading, packing lists, lifting and lashing certificates, dangerous goods declarations for batteries or fuel residues, and customs paperwork. Mark crates clearly with weights, centre of gravity and lifting points; see crate marking for guidance.
Prepare customs documents before arrival. Equipment waiting at a port for paperwork incurs storage charges and is exposed to damage and theft.
Insurance and risk
Cargo insurance should match the mode and the value of the equipment. Breakbulk and heavy-lift cargo face higher handling risk; deck cargo faces weather risk. Read the policy conditions on packing, preservation and surveys, because claims can be refused if conditions are not met.
Arrange pre-shipment and arrival surveys for high-value items. Photos and condition reports at each handover point make claims much easier if damage occurs.
Freight forwarders and project cargo specialists
Container cargo can be handled by most freight forwarders, but RoRo, breakbulk and heavy-lift shipments benefit from project cargo specialists who know the vessels, ports and lifting requirements. They can secure space on suitable ships, arrange port handling and coordinate inland transport.
Give the forwarder accurate dimensions, weights, centres of gravity and lifting points well before shipment. Errors in this data cause many delays and lifting incidents.
Agree who is responsible at each handover point, from factory to port, port to vessel, vessel to destination port and port to site. Clear responsibilities make it easier to manage risk and to settle any claims.
Choosing the mode
Start from the equipment dimensions and weights, the destination port and the inland route. Then compare the available modes on transit time, handling steps, weather exposure, cost and schedule reliability. For a project with many pieces, a mix of modes is common: containers for parts, RoRo for trailers, breakbulk for the heaviest items.
Plan the sequence so equipment arrives in the order it will be installed. A heavy transformer that arrives months early waits in storage; one that arrives late stops the project.
About the logistics team
Choosing how heavy power equipment crosses the ocean is a daily decision for our logistics coordinators. Based on work by the USP&E logistics coordinators, who move generators, turbines and power plant equipment from factories and stock yards to project sites. USP&E contracts for and performs EPC and O&M itself, never reselling, supported by 150+ power projects in 45+ countries, 25,000 MW contracted since 2002 and 24+ years in the field. See how we deliver power plant projects end to end.
Offices: Colorado Springs (1755 Telstar Dr, Suite 300), Knoxville (800 S Gay St, Suite 700), London (162-168 Regent Street), Johannesburg (22 Kildoon Rd, Bryanston), Cape Town (31 Brickfield Road, Woodstock) and China (No. 1 Ningzhou Road, Wuxi). Regions: USA | AFRICA | UK | UAE | CHINA. ISO 9001 and ISO 45001 certified.
Questions about shipping power equipment
What is the best way to ship a diesel generator overseas?
Small sets usually go in standard containers. Larger or trailer-mounted units may go on flat racks, RoRo or breakbulk, depending on size, weight and destination port.
What is RoRo shipping?
Roll-on roll-off shipping, where cargo on wheels or roll trailers is driven or towed aboard the vessel instead of being lifted.
When is breakbulk needed?
When equipment is too large or heavy for containers or RoRo, such as large engines, transformers and turbine skids.
How should generators be protected for sea transport?
With corrosion inhibitors, desiccant, sealed openings and moisture barrier wrapping, especially for deck cargo.
Why check the destination port?
Because crane capacity, quay strength, storage and the inland route determine whether the cargo can be unloaded and delivered.
Planning a power equipment shipment?
Send the equipment list, dimensions and destination, and our logistics team will suggest the shipping modes and route.
Send drawings, load data or questions via the logistics enquiry form; the switchboard is +27 10 822 2324 and the inbox is info@uspeglobal.com. Equipment ready to ship is listed in the USP&E inventory.
