Roll-On Roll-Off (RoRo) Boat Shipping Rates & Calculator

Attempting to decode an international ocean freight quote feels like learning a second language overnight. Between RoRo rates, terminal handling surcharges, customs bonds, and export filings, boat owners frequently face unexpected port bills exceeding four thousand dollars. Choosing Roll-On/Roll-Off (RoRo) is often the safest method for trailerable vessels, but calculating your true landed cost requires understanding cubic meter ocean math. Here is the complete breakdown of 2026 RoRo boat transport rates and maritime logistics.

How RoRo Ocean Freight Differs from Container Shipping

In Roll-On/Roll-Off shipping, your boat remains hitched to its road-worthy trailer or sits atop a heavy-duty steel shipping cradle. Specialized cargo vessels feature massive stern ramps that lead into enclosed, weather-protected vehicle decks. Port stevedores simply hitch your trailer to a terminal tug and roll the entire assembly into the ship's hold.

Because no dockside gantry cranes hoist your bare hull through the air, RoRo dramatically minimizes the risk of structural stress cracks or rigging drops.

For smaller vessels capable of cross-country transit before reaching port, compare domestic overland pricing in our boat shipping cost guide.

The Cubic Meter (CBM) Ocean Tariff Formula

Overland trucking prices by highway mileage; ocean shipping lines price by volume. Steamship carriers measure the extreme exterior dimensions of your boat and trailer combined, then calculate the total cubic meters (CBM).

The Ocean Freight Volume Equation:
Total CBM = Length (meters) × Width (meters) × Height (meters)
Or in Imperial: (Length in inches × Width in inches × Height in inches) ÷ 61,024

Example: 26-Foot Center Console on Trailer
Total LOA (trailer tongue to prop): 31'0" (9.45m)
Extreme Beam (rub-rails): 8'6" (2.59m)
Loaded Height (keel to radar): 10'6" (3.20m)
Volume: 9.45m × 2.59m × 3.20m = 78.32 CBM

At a standard transatlantic tariff of $65 per CBM:
Ocean Base Rate = 78.32 CBM × $65 = $5,090.80

Every inch of protruding antennas, T-top canopies, or extended outboard engines increases your CBM calculation. Removing your outboard propellers, unbolting radar domes, and lowering bimini frames can save over $1,200 on a single ocean crossing.

Crucial Port Fees Excluded from Ocean Freight Quotes

A common shock for first-time boat exporters is discovering that the ocean freight booking confirmation covers only the ocean voyage between berths. You must budget for mandatory origin and destination landside charges:

1. Terminal Handling Charges (THC): Port authorities charge between $350 and $750 at both the loading and discharge terminals to handle vessel logistics.
2. Export Customs Clearance & Title Validation: U.S. Customs and Border Protection (CBP) must inspect the original title and bill of sale at least 72 hours prior to vessel loading. A licensed customs broker typically charges $250 to $450 for this service.
3. Marine Cargo Insurance: Standard steamship bills of lading limit carrier liability under the Carriage of Goods by Sea Act (COGSA) to just $500 per package. Review our guide on boat transport insurance to avoid costly claim denials. Comprehensive all-risk marine transit insurance costs 1.5% to 2.5% of your vessel's insured value.
4. Destination Import Tariffs & VAT: When your boat arrives in Europe, Australia, or the Caribbean, local customs inspect for biosecurity and assess value-added tax (VAT) ranging from 10% to 25% of the combined cost, insurance, and freight (CIF) value. Run our specialized international boat shipping calculator to evaluate global route costs.

Preparing Your Boat for RoRo Delivery

To clear international steamship lines under International Maritime Organization (IMO) standards, your vessel must meet rigorous mechanical and safety criteria:

• Trailer tires must have sufficient highway tread with zero sidewall dry-rot, and wheel bearings must be freshly packed.
• Fuel tanks must contain less than 1/4 tank of gasoline (or diesel) to comply with international hazardous materials maritime codes.
• Bilges, livewells, and blackwater holding tanks must be completely drained and flushed according to our boat prep checklist.
• All loose cushions, marine electronics, and fishing gear must be removed; steamship lines accept zero liability for items stored aboard during ocean transit.
• Verify whether your route requires domestic overland transport to the seaport through our international shipping directory.