GA - General Average
GLS - Gearless
GNCN - Gencon - a standard BIMCO charter party form
GN (or GR) - Grain (capacity)
GO - Gas Oil
GRD - Geared
GRT - Gross Registered Tonnage
GSB - Good Safe Berth
GSBP – Good Safe Port Berth
GSP - Good Safe Port
GTEE - Guarantee
