A Master Guide to Shipping Boats, Yachts, & Marine Engines Globally

The global transportation of marine assets, from luxury yachts and sailboats to powerful marine engines, is a specialist, high-stakes operation. These are not standard cargo; they are high-value, often custom-built, and aerodynamically delicate assets that require an engineering-led approach to transport. A failure in lifting, securing, or customs compliance can lead to catastrophic damage, multi-million-pound losses, and significant project delays.

This is not freight. This is project logistics. It demands a partner with proven, hands-on experience in marine transport. Ocean Cargo, with over 25 years of expertise in managing high-consequence OOG (Out-of-Gauge) and Heavy Lift cargo, provides this specialist, end-to-end service. We manage every variable, from the design and fabrication of custom shipping cradles to the complexities of IMDG (Dangerous Goods) compliance for engines, ensuring your vessel or engine arrives at its destination in perfect condition.

Part 1: The Logistics of Shipping Boats & Yachts

Shipping a boat is a unique challenge because its hull is designed for hydrodynamic efficiency in water, not for the point-load stresses of land transport. Our entire process is built around mitigating this risk.

The Core Challenge: Custom-Built Shipping Cradles

You cannot simply place a yacht on a flat rack or a vessel deck. Its hull will be compromised, and it will be unstable. The vessel *must* be supported by a cradle.

• The Solution: Ocean Cargo designs and fabricates custom-built shipping cradles. These are engineered steel or ISPM15-compliant timber structures, custom-fit to the exact shape and contour of your vessel’s hull.
• The Process: We work from the naval architect’s drawings to engineer a cradle that perfectly supports the vessel at its designated strong points (e.g., along the keel and bulkheads). This cradle distributes the vessel’s weight evenly, preventing stress fractures, hull deformation, or damage to props and rudders. The cradle itself is built with designated lashing points and, if necessary, forklift pockets, becoming the all-in-one base for lifting and securing.

Transport Modes for Boats & Yachts

The method we choose depends on the vessel's size, its trailer, and the route. Ocean Cargo is multimodal and will select the safest, most cost-effective option.

• Roll-On/Roll-Off (Ro-Ro): This is the preferred, safest, and often most cost-effective method for small-to-medium-sized boats that are already on their own road-legal trailer. The entire rig (trailer and boat) is "rolled" onto the vessel, like a car ferry, and lashed to the deck. This eliminates all lifting risks.
• Lo-Lo (Lift-On/Lift-Off) onto a Flat Rack: This is the most common method for vessels without a trailer. The boat is first secured into its custom-built cradle. The entire assembly (boat and cradle) is then lifted onto a 20ft or 40ft flat rack container (a container base with no sides or roof). Our specialist team then lashes the cradle to the flat rack, and the entire unit is shipped on a standard container vessel.
• Lo-Lo (Lift-On/Lift-Off) as Break Bulk: For large yachts and superyachts that are too large or heavy for a flat rack. The vessel is lifted (often using multiple cranes and a spreader bar system) and lowered directly onto the deck of a specialised Break Bulk vessel or a dedicated yacht carrier. This can be stowed as:
  • Deck Cargo: The cradled yacht is secured (sea-fastened) to the main deck.
  • Water-Line Cargo: On some semi-submersible "float-on/float-off" carriers, the vessel deck is submerged, allowing the yacht to be floated into position before the deck is raised.

Preparation & Risk Mitigation for Yachts

We manage the critical pre-shipment preparation to prevent damage.

• Shrink-Wrapping: All vessels shipped OOG (on flat rack or as Break Bulk) must be professionally shrink-wrapped. This provides a drum-tight, protective skin that prevents damage from salt spray, debris, and weather during the ocean voyage.
• Securing: We ensure all masts, rigging, and antennas are taken down, packed, and secured separately. All hatches are sealed, and any loose items inside the cabin are stowed.
• Lifting: Our lift plans are meticulous. We use "soft slings" (high-capacity fabric slings) and spreader bars to lift the vessel, ensuring no chains or wires ever touch the delicate hull or superstructure.

Part 2: The Logistics of Shipping Marine Engines

Shipping a marine engine presents a different set of challenges. It is a dense, high-value, Heavy Lift item that is also frequently classified as a Dangerous Good.

IMDG (Dangerous Goods) Compliance

This is the most critical compliance hurdle. A new or, more commonly, a used marine engine will contain residual fuel and oil.

• IMDG Classification: This classifies the engine as a Dangerous Good under the IMDG (sea) Code. It typically falls under Class 9 (Miscellaneous Dangerous Goods), UN 3166 (ENGINE, INTERNAL COMBUSTION) or UN 3530 (ENGINE, INTERNAL COMBUSTION, FLAMMABLE LIQUID POWERED).
• The Solution: The shipment must be accompanied by a certified Dangerous Goods Note (DGN). The engine must be correctly placarded, and the shipping line must give specific approval to load. Failure to declare this is a serious compliance violation that will result in the cargo being stopped, fined, and refused shipment. Ocean Cargo's certified IMDG team manages this entire declaration process from start to finish.

Securing Marine Engines for Transit

An engine is a top-heavy, irregularly shaped piece of heavy steel. It cannot simply be placed on a pallet.

• Palletising & Cradling: The engine must be secured to a robust, custom-built, ISPM15-compliant timber or steel base/cradle that is strong enough to support its concentrated weight.
• Lashing: The engine is then bolted and strapped to this cradle. The entire assembly is then loaded into a container (FCL) or onto a flat rack (OOG) and expertly "lashed and choked" (braced with timber and chains) to prevent any movement.
• Lifting: We only lift the engine by its designated, load-tested lifting eyes, as specified by the manufacturer.

How Ocean Cargo Manages Marine Logistics End-to-End

Ocean Cargo provides a complete, door-to-door project management service. We act as your single point of accountability. Our process is built on 25+ years of experience and is designed to de-risk your entire supply chain.

1. Initial Enquiry & Quotation: You contact us with the asset’s details (make/model, technical drawings, dimensions, weight, and engine fluid status). Our project team analyses the data and provides a detailed, all-inclusive quotation and transport plan.
2. Booking and Planning: Upon your acceptance, we book the vessel space (Ro-Ro, OOG, or Break Bulk) and all specialist transport. We create the detailed project plan, including lift plans, cradle designs, and IMDG documentation.
3. Preparation & Collection: We manage the critical preparation phase, including the fabrication of the custom cradle, professional shrink-wrapping, and IMDG compliance for engines. We then arrange for a specialist low-loader trailer to collect the asset.
4. Export Formalities: Our in-house customs compliance team prepares and files the export declaration and all necessary customs and (if needed) IMDG documents.
5. Port Operations and Sea Transit: The asset is delivered to the port and professionally driven (Ro-Ro) or lifted (Lo-Lo) and secured (lashed and choked) onto the vessel. We monitor the voyage 24/7 and provide you with tracking updates.
6. Import Clearance: Before arrival, our partners at the destination use the pre-lodged documents to file the import declaration, ensuring immediate clearance upon arrival.
7. Final Delivery: Once cleared, the asset is loaded onto local specialised transport and delivered directly to the final marina, shipyard, or project site, as per the pre-agreed delivery schedule.
8. Proof of Delivery (POD): We provide a final Proof of Delivery confirming your asset has arrived safely.

Global Customs Compliance: Temporary Import

Our in-house customs compliance team is an expert in the complex customs procedures for marine assets.

• Temporary Import: If your yacht is being shipped for a specific race, charter season, or event, it should not be subject to complete import duties and VAT. Ocean Cargo manages the "Temporary Import" (TI) customs procedure, lodging the necessary bond or ATA Carnet with local customs to allow the vessel to enter duty-free for a set period.
• HS Code Classification: We ensure the correct HS (commodity) code is used (e.g., 8903.91 for sailboats, 8408.10 for marine propulsion engines), which is vital for calculating import duties for a permanent import (sale).

Digital Visibility, Milestones, and Communication

When your high-value marine asset is in transit, transparent and proactive communication is essential. Ocean Cargo provides a dedicated 24/7 project manager as your single point of contact, ensuring you always speak to someone who knows your shipment’s exact status.

Key Tracking Milestones

Our system tracks every critical event, including:

• Booking Confirmation: Your project plan, transport mode, and cradle design are confirmed.
• IMDG Approval (for engines): Carrier has accepted the DGN.
• Cargo Prepared: Your yacht is cradled and wrapped, or your engine is crated.
• Cargo Collected: Your asset is on its way from the factory/marina on a specialist trailer.
• Secured at Port: We provide photographic confirmation that the unit is correctly lashed.
• Export Customs Cleared: Your export declaration is approved.
• Vessel Departed: Your cargo is on the water.
• Vessel Arrived: Your cargo has reached the destination port.
• Import Customs Cleared: Your shipment has been released by local customs (e.g., from its Temporary Import bond).
• On-Carriage for Delivery: The final-mile specialist transport is loaded and en route.
• Proof of Delivery (POD): The shipment is complete, and a signed POD is available.

Sustainability Levers in Marine Transport

Ocean Cargo is committed to providing responsible logistics solutions. We support your sustainability goals by:

• Modal Choice: We prioritise sea freight (the most carbon-efficient mode per tonne-mile) for all marine assets, reserving air freight only for genuine, project-critical engine parts.
• Ro-Ro Preference: We prefer Ro-Ro carriers whenever possible, as they are among the most efficient and modern vessels in the global fleet.
• Carrier Selection: We partner with shipping lines and carriers that are investing heavily in sustainability, from using Very Low Sulphur Fuel Oil (VLSFO) to pioneering new technologies like LNG-powered vessels.