Bunding, also called a bund wall, is a constructed retaining wall around storage "where potentially polluting substances are handled, processed or stored, for the purposes of containing any unintended escape of material from that area until such time as a remedial action can be taken.

A berth, or bed, usually built in.

1. Fuel oil for the main propulsion machinery. 2. A compartment for the storage of fuel oil used by the ship’s machinery.

To load fuel into ship's fuel tanks for its own use as distinguished from loading it as cargo.

The standard document required by Annex VI of MARPOL which contains information on fuel oil delivery: name of receiving vessel, port, date, data of a supplier, quantity and characteristics of fuel oil.

Fuel receiving stations, usually at an upper deck level, port and starboard, furnished with valves, elbows, pressure gauges, filters and relief valves.

A time charter agreement will stipulate the terms under which the bunkers on board will be delivered to the use of the charterers and the terms under which the bunkers remaining on board will be redelivered to owners.

A small tanker fitted with fuel pumps and a crane for hose handling, used for loading fuel oils into ship tanks.

A floating object used as an aid to mariners to mark the navigable limits of channels, their fairways, sunken dangers, isolated rocks etc., or as reference point for navigation or for other purposes.

Frames mounted on the cable vessel side to deploy and recover cable buoys.

A special crane used onboard of aids to navigation service vessels. A buoy-handling crane has a jib with fork-type end.

The ship is equipped with a working crane designed for handling buoys and salvaging containers. It has two lifting devices, each with a heave compensator, with a capacity for buoy lifting of 125kN at a radius of 15m.

The ship designed for handling navigation buoys and beacons, usually fitted with a deck crane and a spacious working deck. See also Aids to navigation service vessel.

Buoyancy, or upthrust, is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object.

An atomizer used in a boiler.

Burnup is a measure of how much energy is extracted from a primary nuclear fuel source. It is measured as the fraction of fuel atoms that underwent fission.

Copper bars fitted at the back of the main switchboard as part of the distribution system. A.C. generators fed to the bus bars and circuit breakers are used to draw off the supply.

In electric power distribution, a bus duct (also called busway) is a sheet metal duct or also cast resin insulated containing either copper or aluminium busbars for the purpose of conducting a substantial current of electricity.

A busbar is a metallic strip or bar, typically housed inside switchgear, panel boards, and busway enclosures for local high current power distribution.

In electric power, a bushing is a hollow electrical insulator that allows an electrical conductor to pass safely through a conducting barrier such as the case of a transformer or circuit breaker without making electrical contact with it.