A weld made to hold parts of a weldment in proper alignment until the final welds are made.

A fitter, or someone under the direction of a fitter, who tack welds parts of a weldment to hold them in proper alignment until the final welds are made.

see Manoeuvring parameters.

Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.

Emergency drive systems typically installed in ships with geared medium-speed engines by means of an electric motor connected via a clutch to a pinion shaft in the gearbox (PTI).

According to the philosopher Piyush Mathur (2017), "Tangibility is the property that a phenomenon exhibits if it has and/or transports mass and/or energy and/or momentum".

An enclosed space formed by the permanent structure of a ship and which is designed for the carriage of liquid in bulk.

A very important drawing that shows the position and the data of all ship tanks. To avoid misunderstandings, the TAP must contain a sufficient number of views and cross sections.

The process of removing hydrocarbon vapours, liquids or residues.

see Washing machines.

The software package for the monitoring of tank cleaning, developed by Toftejorg A/S. The system provides data reports for port authorities and statistics that help to optimise the cleaning technique.

The protective structure intended to protect the cargo containment system against damage where it protrudes through the weather deck or to ensure the continuity and integrity of the deck structure, (IGC Code).

The upward extension of a portion of a cargo tank. In case of below-deck cargo containment system, the tank dome protrudes through the weather deck or through a tank cover, (IGC Code).

As built documentation of tanks.

A special tank support arrangement for use on board product tankers used for carrying asphalt, coal tar and molten sulphur at high temperature.

A tank truck, gas truck, fuel truck, or tanker truck (United States usage) or tanker (United Kingdom usage), is a motor vehicle designed to carry liquids or gases on roads.

Tankers are ships carrying liquid cargoes in bulk; crude oil, oil products, chemicals, liquefied gases, molten sulphur, even orange juice.

A device in a transformer to change the number of coils used, since the voltage ratio of a transformer is based on the ratio of the number of turns between the primary and secondary coils, changing the number of turns changes the voltage.

The target value, in years, of the durability for which the coating system is designed.

A waterproof canvas covering for a hatch or other purpose.