Watercraft Identification
How to Review a RIB WIN/HIN or CIN Marking
A practical buyer guide to checking the identity, format, placement, permanence and document consistency of a RIB or inflatable boat identification number.
For an RCD-covered recreational craft, the Watercraft Identification Number (WIN) must identify the individual boat and remain linked to the responsible manufacturer, production sequence, month and year of production, and model year as required by the applicable framework. Industry documents may still call it HIN or CIN. Buyers should verify the actual number format, marking method, location and document references against the current RCD requirements, EN ISO 10087 edition adopted for the project, the builder’s plate, EU Declaration of Conformity, owner’s manual and boat-level records.
Specifications verified: 2026-09Identity checks
Review the number as part of the complete delivery identity
A number printed on a document is not enough. The physical marking, supporting documents and production records must refer to the same boat.
Manufacturer identity
Confirm the responsible legal manufacturer or brand party and check that the manufacturer identifier is assigned and used consistently for the project.
Serial sequence
Check that the production sequence identifies the individual watercraft and is not confused with an engine serial number, order number or shipping reference.
Production timing
Review the production month and year and the model-year information required by the applicable identification format and project documentation.
Location and visibility
Confirm the required external and concealed or duplicate identification locations for the actual craft, including access for inspection without damaging the boat.
Permanent marking
Ask how the marking resists removal, alteration and normal exposure. The selected method must suit the hull, transom or other approved marking location.
Cross-document consistency
Match the WIN/HIN or CIN to the builder’s plate, declaration, manual, invoice, inspection record, packing list and boat-level traceability pack.
Buyer review sequence
Check identity before reviewing the certificate bundle
The sequence below helps prevent a correct document being attached to the wrong model or boat.
- 01
Confirm the regulatory path
Establish whether the craft is within the RCD scope, whether it is complete or partly completed, and who is the responsible manufacturer or final party placing it on the market.
- 02
Request the applicable identifier format
Ask which RCD provision, harmonised standard edition or national implementation is being used and have the responsible compliance professional confirm the current format before production marking.
- 03
Review visible and concealed markings
Confirm the required primary marking, any duplicate or concealed marking, character legibility, durability, access and protection against unauthorised alteration.
- 04
Match the delivery documents
Compare the identifier character by character across the builder’s plate, EU DoC where applicable, owner’s manual, inspection records, invoice, packing list and photos.
- 05
Record the boat-level reference
Retain the identifier with the approved configuration, material and test records, non-conformance history, final inspection and shipment release for warranty and market-surveillance support.
Red flags
Identification mistakes that create avoidable risk
Buyer FAQ
Questions about RIB WIN/HIN identification
Is WIN different from HIN or CIN?+
The terms are often used differently across regulations, standards and industry documents. WIN is the RCD terminology commonly used for watercraft identification; HIN and CIN may appear in older or national usage. Confirm the terminology and required format for the actual market.
Does the WIN prove that the boat is CE compliant?+
No. It identifies the watercraft. Compliance also depends on the applicable conformity assessment, technical documentation, declaration, marking, safety information and production controls.
Where should a buyer expect the number?+
The primary and any duplicate or concealed locations depend on the applicable RCD and EN ISO 10087 requirements and the craft construction. Ask for the marking drawing or inspection evidence for the actual model.
Can the boat number be corrected after production?+
Any correction must be controlled and documented. Altering a permanent identifier without a documented assessment can create traceability and compliance risk; consult the responsible manufacturer and compliance specialist first.
Need to verify a RIB identification set?
Send the target market, model, configuration and current marking or document sample. We will identify the questions that require confirmation before release.