Choose the first letter of the word sought or type the word you are searching for in the field above.
- galley
- the cooking compartment in a ship
- gangway
- a portable bridge made of aluminium steel or wood linking shore to ship or ship to ship
- gantry crane
- a mobile crane with a span across several rows of containers; used in container terminal to move and organise the containers
- garboard strake
- the strake or line of next plates running in the fore and aft direction next to the keel
- gasket
- a thin sheet or disc made of specially designed rubber or fibre based material used for sealing a joint between two metal surfaces to prevent oil water steam or any fluid from escaping
- gear
- generally used to mean fittings tools equipment or any part of a machinery
- GENCON
- the codename given to a standard form voyage charter party published by BIMCO for general purpose use
- general arrangement plan
- plan of a vessel showing a side view and several plan views at different decks; the drawing provides general details of the ship such as dimensions number of cargo holds tanks and cranes layout of the cabins in each deck etc.
- general average
- general indemnity made by all interested parties concerned for a maritime loss incurred voluntarily but necessarily for the safety of the remaining property when in peril
- general purpose rating
- a rating who is trained to work on deck as well as engine room
- general service pump
- a pump that can be used as a fire pump or ballast pump or cooling water pump by simply changing the inlet and outlet valves connecting to the different systems
- Germanischer Lloyd
- the German Classification Society or GL for short
- gimbals
- a mechanism consisting of two rings pivoted at right angles which allows the compass or chronometer to maintain at all times in horizontal plane regardless of the vessels movement
- girder
- a long strong steel beam of H section used for keelson and framework where considerable strength is required; generally run in the fore and aft direction under a deck to support deck beams and deck; the girder in turn is supported by widely spaced pillars
- girding
- capsizing of a tug by the vessel it is towing
- gooseneck
- 1. solid fitting which connects the end of a boom to the pivot; 2. bend at top of a pipe such as air vent pipe on deck
- GPS
- stands for Global Positioning System; generally used to refer to GPS receiver or GPS navigator
- GPS navigator
- essentially a GPS receiver with additional function - able to calculate and display solutions to waypoint navigation problems
- GPS receiver
- an electronic device which receives and decodes the GPS satellite broadcasts and displays position course and speed of the ship
- grating
- a framework of crossed or parallel metal bars placed across an opening or as flooring on platform eg a catwalk to allow air to flow freely or to allow view below walkway
- gravity tank
- tank positioned at a certain height to maintain supply at a required pressure without use of pump
- greaser
- an engine room rating whose duties include lubrication cleaning etc.; also known as oiler or wiper
- Greenwich Mean Time
- the time by the sun as measured at Greenwich England; GMT in short
- Greenwich meridian
- the line of 0o longitude which passes through Greenwich England; also known as first or prime meridian
- grommet
- 1. ring made from a single rope strand; 2. brass eyelet formed in a canvas; 3. soft rope ring used as a gasket under a nut or bolt head to maintain watertightness
- Gross Register Tonnage
- gives the total internal volume of the vessel in one hundred cubic feet less the volume of certain exempted spaces which provide comfort to the crew and ships safety; also known as Gross Tonnage or GRT for short
- guard rails
- permanent railing usually made of steel pipe fitted on outboard edge of a deck to prevent person from falling over the ships sides
- gudgeon
- a block with a hole in the centre to receive the pintle of a rudder; located on the stern post it supports and allows the rudder to swing
- gudgeon pin
- horizontal pin by means of which a piston is attached freely to a connecting rod in a diesel engine
- gunwale
- the upper edge of the side of a small ship or boat or upper edge of bulwarks in bigger ship
- gusset plate
- bracket plate used to tie together and reinforce two structural members in a framework; usually triangular and can be found at corners
- guy
- a rope used to steady and control the lateral swing of a boom or derrick
- gypsy
- a sprocket in the windlass for connecting the links in anchor chains; used for lowering and hauling in the anchor

