IMO Conventions

Please note that due to the constantly developing nature of the marine industry this list should not be considered exhaustive. Please contact the technical department for further information at

International Tonnage Convention 69 (ITC 69)

ITC 69 introduced a universal tonnage measurement system for gross and net tonnages, both of which are calculated independently. ITC 69 is a flag state requirement for registration and is used for port taxation.

For further information regarding tonnage please click here.

Load Lines (ILLC'66)

Limitations on the draught to which a ship may be loaded make a significant contribution to her safety. These limits are given in the form of freeboards, which constitute, besides external weathertight and watertight integrity, the main objective of the Convention.

For further information about load lines please click here.

International Convention on Standards of Training, Certification and Watchkeeping for Seafarers, 1978 (STCW)

STCW prescribes minimum standards relating to training, certification and watchkeeping for seafarers which countries are obliged to meet or exceed.
For further information about STCW please click here.

International Safety Management Code

The International Safety Management Code (ISM) provides an international standard for the safe management and operation of ships and for pollution prevention for vessels over 500GT.

For further information on the ISM please click here.

The International Ship and Port Facility Security Code (ISPS Code)

The aim of ISPS is to provide a standardised, consistent framework for evaluating risk, enabling Governments to offset changes in threats with changes in vulnerability for ships and port facilities through determination of appropriate security levels and corresponding security measures

For further information regarding the ISPS please click here.

International Convention for the Prevention of Pollution from Ships (MARPOL)

MARPOL is the main international convention covering prevention of pollution of the marine environment by ships from operational or accidental causes. Of particular interest to Superyachts are Annex I, IV & VI.

For further information about MARPOL please click here.

International Convention for the Safety of Life at Sea (SOLAS), 1974

SOLAS is arguably most important of all international treaties concerning the safety of merchant ships. Of particular interest for Superyachts are the sections regarding: Construction, Fire Protection, Fire Appliances, Life Saving Appliances, Navigation Equipment and Radio provision.

For further information on SOLAS please click here.