Two hulls, one vessel
Both hull identifiers and the builder's documentation must describe one complete vessel.
Registration by vessel type
Catamaran Registration
Register a sailing or motor catamaran with the multihull's beam, stability, length, use and technical documentation correctly recorded.
Build the decisionDirect answer
Where should you start?
A catamaran is not registered solely by overall length. Beam, hull identifiers, stability information, passenger capacity and charter use can affect the route. Poland and San Marino are common comparisons under 24m; commercial catamarans need a specific code and survey review.
Five decision factors
What determines the right flag?
Beam and measurement
Wide beam affects measurement, marina records and sometimes tonnage.
Stability
Commercial or passenger operation can require formal stability information.
Charter use
Bareboat and crewed charter are commercial activities.
Passenger capacity
Higher passenger numbers can move the vessel outside yacht-code limits.
Prepare the file
Documents to collect.
- Builder's certificate for the complete multihull
- HIN/WIN details for each hull where issued
- Bill of sale
- Conformity and stability documents
- Engine details for one or two engines
- Previous registration, survey and radio evidence
Avoid expensive corrections
Common mistakes.
- Listing only one hull identifier
- Ignoring beam and stability data
- Treating charter as private use
- Using marina documents as ownership proof
- Failing to disclose passenger capacity
Vessel guide FAQs
Questions before applying.
Are catamarans eligible for San Marino?
Qualifying motor and sailing multihulls can be assessed under the applicable yacht code.
Does beam change the registration price?
It can affect measurement, tonnage or survey work even when the service package is length-based.
Can a charter catamaran use private registration?
No. Paid charter requires the correct commercial route.
Do both engines need documents?
Yes, when two engines are fitted both should be identified.
Free initial review
Match the flag to the boat.
Share the vessel, owner and intended-use details. The current form is a visual preview and does not transmit data.