Tonnage Measurements

At Marine Sea Services, we are approved to undertake Tonnage Measurements on vessels of up to 24m Load Line Length (LLL), for British Registration through Mecal & SCMS. Note that the Length Overall (LOA) may be over 24m.

Part 1 Registration requires re-registration every 5 years but does not require a further Survey for Tonnage and Measurement. This is dealt with directly between the vessel owner and the Registry. A new Certificate of Survey for Tonnage and Measurement will be required if there are changes to your vessel (for example, an engine change).

​Reasons for Part 1 vessel registration:

• Evidence you own the vessel
• Shows your vessel’s nationality
• Use the boat as security for a marine mortgage
• Entitles you to protection from the Royal Navy and the services of British Consuls
• Provides internationally accepted documentation to ease passage to foreign ports
• Can enhance the re-sale of your vessel
• Provides evidence of the date of the build
• Ensures that your boat’s name is unique on Part 1

For more information, contact us at Marine Sea Services.