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Tonnage Survey – MCA Approved Tonnage Measurement & Certification

An MCA-certified tonnage survey is required for yachts up to 24 meters to be transferred to the flags of the United Kingdom, Guernsey, Isle of Man, BVI, Gibraltar, Jersey, and Cayman. This process determines and documents your vessel's length, volume, structure, and gross/net tonnage according to British standards. This process provides your yacht with an official and valid tonnage certificate (CoT) for legal registration in specified countries, insurance, flag changes, or international registration.

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Whay is Tonnage Survey Necessary?

  • It proves your yacht's official tonnage and is valid for flag registration in specified countries.

  • Accurate and up-to-date tonnage information is required for port, tax, insurance, and registration documents -inaccurate or missing tonnage can cause legal/logistical issues.

  • It ensures investment security by taking into account the yacht's key information, such as its HIN and Engine Serial Number.

  • The tonnage certificate is the official document confirming the boat's value and legal compliance.

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How is a Tonnage Measurement Done?

  • Technical measurements of the vessel: length, width, depth, interior volumes, structural details, etc.

  • Volume and water volume calculations; hull, enclosed spaces, and underwater volumes are taken into account.

  • Internationally recognized reporting: Gross/net tonnage values, measurement methodology, and official documentation are prepared.

  • Documentation: Report + tonnage certificate + certificate approval

  • Consultancy as needed: Guidance on flag changes, registration, insurance, and registration procedures.

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Conditions that require a Tonnage Measurement

  • Boats to be registered under the flags of the United Kingdom, Guernsey, Isle of Man, BVI, Gibraltar, Jersey, and Cayman.

  • Buyers or sellers seeking official tonnage information during the purchase/sale process.

  • Those seeking legal tonnage documentation for insurance, port registration, tax, and duty procedures.

  • All boat owners seeking documentation regarding boat value, volume, or legal compliance.

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