An atmospheric condition in a tank when it is free from any concentration of inflammable, noxious or toxic gases and vapors. … [Read more...]

The strake next to the keel (running fore and aft). That strake of the bottom which is wrought next the keel, and rabbets therein.The first strake of the shell plate, either side and next to the keel plate. … [Read more...]

A line rove through a single block secured aloft. … [Read more...]

The entrance into the ship by the steps on the side. A device by which persons come on board or disembark the vessel. … [Read more...]

The place appointed for the fire-hearth and the use of the cooks. It is generally under the forecastle or the fore-part of the ship. … [Read more...]

A GMDSS radio operator's certificate for use on ships trading beyond GMDSS Sea Area A1. … [Read more...]

Global Navigation Satellite SystemA satellite-based system for providing position, navigation and time with global rather than regional coverage. GNSS in use include the Global Positioning System (GPS) and Global Navigation System (GLONASS). Systems under development include Galileo (Europe) and Beidou (China). … [Read more...]

A coordinate system, and a set of reference points used to locate places on the surface of the Earth. WGS 84 is the Geodetic Datum used by GPS, ECDIS and ENCs. … [Read more...]

A certificate issued by an authorised responsible person confirming that, at the time of testing, a tank, compartment or container was gas free for a specific purpose. … [Read more...]

A tank, compartment or container is gas free when sufficient fresh air has been introduced into it to lower the level of any flammable, toxic, or inert gas to that required for a specific purpose, e.g. hot work, entry, etc. … [Read more...]