G

Grain capacity.

G.A.

General Average.

G.B.

Great Britain.

G/B (GR/BL)

Grain / bale capacity.

GBB

Gross ballast bonus.

GC

General cargo; great circle.

GENCAR

General cargo.

GEOG RTN

In geographical rotation.

G-H RGE

Gibraltar - Hamburg range

GIB

Gibraltar.

GLESS

Gear less.

GLFD

Gas oil.

GLS

Gearless

GN (or GR)

Grain (capacity)

GNCN

Gencon (General Conditions)

GO

Gas Oil

GOP

Gross operating profit.

GP

General purpose

GRD

Geared.

GRT

Gross register ton.

GSB

Good Safe Berth

GSP

Good Safe Port

GSSL

Ports of Genoa, Savona, Spezia or Leghorn.

GSSLNCV

Ports of Genoa, Savona, Spezia, Leghorn, Naples, Civetta or Vecchia

GT

Gross tonnage.

GTEE

Guarantee

Guar. (Gtee)

Guaranteed.

H.A. or D.

Le Havre, Antwerp or Dunkirk.

H.H. (H/H)

Ports between and inclusive of Le Havre and Hamburg.

Ha

Hatch, hatchway.

HAT

Highest astronomical tide.

HBR

Hamburg range.

HC

hatch cover; hold cleaning.

HCHTRS

Head charterers.

HCM

Ho Chi Minh City.

HD

Half dispatch.

HDLTSBENDS

Half Dispatch Lay Time Saved Both Ends

HDWTS

Half Despatch Working Time Saved

HDWTSBE

Half dispatch working time saved both ends

HFO

Heavy fuel oil.

HG

Heavy grain.

HHDW

Handy Heavy d.w. (scrap)

HHDWS

Heavy, handy, deadweight scrap

HLESS

Harmless

HMB

Heavy motor block

HMS

Heavy Melting Scrap

HNS

Hazardous and Noxious Substances

HO

Hold

Ho/Ha

Holds/hatches.

HR/HRDS

Hampton Roads

HSD

High speed diesel.

HSS

Heavy grains, Soyabeans and sorghums

HVF

Heavy viscosity fuel oil.

HW

High Water

HWDW

Heavy, handy, dead weight.

HWLTHC

Height waterline to top hatch.

HWONT

High water at ordinary neap tides

HWOST

High water at ordinary spring tides

I.A.C.S. (IACS)

International Association of Classification Societies.

IATA

International Air Transport Association.

IBC

Intermediate bulk carrier.

ICC

International Chamber of Commerce.

ICS

Institute of Chartered Shipbrokers; International Chamber of Shipping.

IDL

International Date Line.

IFO

Intermediate fuel oil.

IGM

Import general manifest.

IGS

Inert Gas System.

IHAM

Immigham

IHP

Indicated horse power.

ILO

International Labour Organisation, Geneva.

ILOHC

In lieu of hold cleaning.

ILOW

In lieu of weighing.

IMB

International Maritime Bureau.

IMDG

International Maritime Dangerous Goods

IMO

International Maritime Organisation

IN&/OR OVER

Goods carried below or on deck

IND

Indication

INDO

Indonesia.

INMARSAT

International Maritime Convention on Communication by Satellite.

INTERCARGO

International Association of Dry Cargo shipowners.

INTERTANKO

International Association of Independent Tanker Owners.

IOPC

International Oil Pollution Compensation

IOT (INCLOT)

Including overtime.

ISF

International Shipping Federation.

ISM

International Safety Management (Code).

ISO

International Standards Organisation.

ITF

International Transport Worker’s Federation.

IU

If Used

IUATUC

If used actual time used to count

IUHTAUTC

If Used, Half Time Actually to Count

IWL

Institute Warranty Limits