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Guidance: Tonnage measurement of UK ships: Authorised organisations

Maritime Coastguard Agency

February 23
09:03 2024

1. Introduction / Background

The following legislation provides the legal requirements for the measurement of a ships tonnage for registration purposes:

The legislation also requires that the person undertaking tonnage measurements satisfies the requirements set out by the MCA.

Recognised Organisations (ROs) are those organisations the UK has recognised to comply with its international obligations in relation to the International Maritime Organisations (IMO) Code for Recognised Organisations.

Small commercial vessel (SCV) Certifying Authorities (CAs) are those organisations the UK has authorised to examine and certificate SCVs in accordance with the requirements of the following legislation:

Fishing Vessel Certifying Authorities (FVCAs) are those organisations the UK has authorised to examine and certificate small fishing vessels in accordance with the applicable requirements of the following legislation and codes:

ROs are authorised to undertake tonnage measurement of all UK ships.

SCV CAs are authorised to undertake tonnage measurement of ships under 24 metres in length excluding fishing vessels. SCV CAs are also authorised to undertake tonnage measurement of pre-ITC69 vessels (keel laid before 21st July 1968) of less than 150 tons but 24m in length or over.

FVCAs can be authorised to undertake tonnage measurement of fishing vessels under 24 metres in length.

2. Authorised Organisations to measure tonnage by Vessel Type and Length

All UK Ships of 24m in length and above All UK ships under 24m in length excluding fishing vessels Fishing vessels under 24m in length
ABS X X X
BV X X X
Class NK X * X
DNV X X X
LR X X X
RINA X X X
BCTQ X
IIMS X
MECAL X X
RYA X
SCMS X X
YDSA X

*Note: Class NK is not authorised for Tonnage Measurements of Fishing Vessels

3. List of Tonnage Authorities

The following is a list of the offices of Recognised Organisations and Certifying Authorities authorised by the MCA as Tonnage Authorities through formal agreement to undertake tonnage measurement of UK ships:

Recognised Organisations (ROs)

American Bureau of Shipping Europe Ltd

Eagle House
10 Berrymoor Court
Northumberland Business Park
Cramlington
NE23 7RZ

Tel: +44 (0) 19 1250 4900

Email: absnewcastleontyne@eagle.org

Bureau Veritas Marine & Offshore

Suite 1 & 2
Keel House
Tyne Dock
South Shields
Tyne and Wear
NE34 9PY

Tel: +44

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