Check before booking: do not infer ferry permission from road law. The current dangerous-goods or passenger conditions for the exact route are what matter.

Four operators illustrate the differences

Stena Line currently states a five-litre limit for spare petrol, diesel or oil in an approved container. TT-Line publishes a much higher figure in its FAQ. Finnlines applies different limits depending on route. DFDS states that cans are prohibited on the Dunkirk–Rosslare service whether full or empty.

ExamplePublished operator ruleWhat to learn from it
Stena Linemax. 5 L spare fuel in an approved containercontainer condition is part of the rule
TT-Lineup to 60 L in spare fuel cans in its FAQoperator rules can differ markedly
Finnlines5 L or 25 L depending on routeroute matters, not just brand
DFDS Dunkirk–Rosslarecans expressly prohibitedeven “empty” may not be accepted

Why a fixed ferry table ages quickly

Operators can change conditions or apply different rules to individual routes. Use the examples to understand the issue, then open the operator’s current page for the actual sailing.

A five-step check

  1. Identify the exact route and operator.
  2. Open the passenger or dangerous-goods conditions.
  3. Search for fuel, spare fuel, cans or dangerous goods.
  4. Note quantity, container type and declaration requirements.
  5. Contact customer service if wording is unclear.
Important: the examples are evidence that ferry rules differ; they are not permanent travel authorisations.

Frequently asked questions

Are spare fuel cans generally allowed on ferries?

It depends on the operator and route. Published limits vary significantly and some services prohibit cans entirely.

Does a road-transport limit apply on board?

No. The ferry operator’s conditions can be much stricter or simply different.

Should an empty can also be checked?

Yes. Some route rules expressly cover empty cans, so do not assume that “empty” means unrestricted.

Sources for this guide

The following authorities and documents were used for this guide. Where rules change, the current original source takes precedence.

  1. Stena Line – carrying spare fuel in vehiclesStena LineCurrent operator rule on quantity, approved container and condition for spare fuel
  2. TT-Line – passenger FAQ on spare fuel on board [German]TT-LineOperator statement on the maximum quantity of spare fuel in cans on passenger ferries
  3. Finnlines – dangerous goods in passenger vehiclesFinnlinesRoute-specific limits for petrol and diesel in cans on Finnlines passenger services
  4. DFDS Dunkirk–Rosslare FAQ – carriage of gas and fuelDFDSRoute-specific ban on cans on board, whether full or empty
  5. Fuel in a spare can: what is permitted? [German]ADACGerman transport quantities, container marking, restraint in vehicles, international travel and ferries