Inter-Island Service in the Philippines area.

Inter-Island Sevice in Solomon.

International Longshoremen's Association

In Lieu of Dry Dock, Class survey, mostly underwater, which allows the shipowner to postpone a dry dock.

International Lifeboat Federation

International Labour Organization

International Labor Organization

Institute of London Underwriters

International Longshoremen's and Warehousemen's Union

Institute of Marine Engineers

International Maritime Bureau

International Marine Contractors Association

International Maritime Dangerous Goods Code

International Monetary Fund.

International Medical Guide for Ships

International Maritime Industries Forum

International Maritime Lecturers Association

International Maritime Law Institute (IMO)

Inmarsat Mobile Number

International Maritime Organization.United Nation agency created the 6 March 1948, located in London and taking care of all shipping matters.