Practical 2026 guide to flat-rack container shipping for outsized and high vehicles from the UK — sizing, securing, costs and route selection.
A standard container is fully enclosed with roof, walls and doors. A flat-rack is just the steel deck with collapsible end posts — no roof or sides — designed for cargo that is too tall, wide or unusually-shaped for a standard container. Flat-rack ships on the same vessels as standard containers via crane loading.
A 40ft flat-rack from Southampton to typical worldwide destinations runs £3,200–£6,400 ocean freight, plus £450–£950 loading, £350 tarpaulin (optional), £225–£385 surveyor sign-off and £180–£300 documentation. Total all-in typically £5,500–£8,500 depending on destination.
Use flat-rack when your vehicle exceeds 2.69m height with all rooftop accessories, exceeds 2.34m width, or has permanent rooftop fixtures (solar, satellite, rooftop tent) that cannot be removed. High-cube is sufficient for almost all standard vans and most low-profile motorhomes.
Flat-rack cargo is exposed to weather and salt spray on the vessel's upper decks. Risks are minimised by proper tarpaulin covering (£150–£400 extra) and all-risk marine insurance. Total loss is rare; cosmetic salt damage to paint and trim is the most common claim if tarpaulin is omitted on long-haul routes.
Ocean transit times are identical (same vessels). Total door-to-door time is typically 5–10 days longer than standard container because of additional crane scheduling at both ports, surveyor sign-off in the UK and physical inspection more often at destination. Plan for 7+ weeks total on long-haul lanes.
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