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Tonnage certificate

You may need a tonnage certificate, depending on the size of your vessel.

What is a tonnage certificate?

A ship which is more than 24 metres in tonnage length and intending to go on an overseas voyage must have a tonnage certificate before registration. Tonnage measurements can be arranged through one of the following recognised Classification Societies:

How to measure the overall length of your ship

The overall length of a ship is obtained by measuring the distance between a vertical line passing through a point, being the foremost part of the stem, and a vertical line passing through a point, being the aftermost part of the stern.

Last updated: 10 November 2017
Last reviewed: 10 November 2017