Initial stability
Nautical Almanac
Inshore
Inshore
In stays
In stays
Internal halyards
Internal halyards
Interrupted quick flashing light
Interrupted quick flashing light
International Code of Signals
International Code of Signals
Intumescent paint
Intumescent paint
Inwale
Inwale
IOD
IOD
IOR
IOR
Irish pennants
Irish pennants
Ironbound
Ironbound
Iron topsail
Iron topsail
Isobath
Isobath
Isogon
Isogon
Isophase light
Isophase light
J – Juliet
J - Juliet
Jack
Jack
Jack-in-the-basket
Jack-in-the-basket
Jackstaff
Jackstaff