An intergovernmental agency designed to pay compensation for oil pollution damage, exceeding the shipowner liability.

The IOPP certificate is issued to each new ship after an appointed surveyor has inspected it and found it to be in compliance with the MARPOL convention.

The International Organization for Standardization is an international standard-setting body composed of representatives from various national standards organizations.

The International Panel on Fissile Materials (IPFM), established in 2006, is a group of independent nuclear experts from 17 countriesthat aims to advance international initiatives to “secure and to sharply reduce all stocks of highly enriched uranium and separated plutonium, the key materials in nuclear weapons, and to limit any further production”.

The International Radiation Protection Association (IRPA) is an independent non-profit association of national and regional radiation protection societies, and its mission is to advance radiation protection throughout the world.

International Renewable Energy Alliance (REN Alliance) is a formal partnership entered into on 4 June 2004 by five non-profit international renewable energy organisations.

The International Management Code for the Safe Operation of Ships and for Pollution Prevention adopted by IMO as a new chapter to SOLAS convention.

The new security regime for international shipping entered into force in July 2004.

ISSA was formed in 1955 and is now representing nearly 2,000 ship suppliers throughout the world. The ISSA Ship Stores Catalogue is available in printed form, on-line or on CD-ROM.

A standard-sized flange, together with nuts, bolts and washers, which has a coupling suitable for the ship hoses. It is used to connect the shore water main in any port to ship fire main and equipment.

The International Solar Energy Society (ISES) is a global organization for promoting the development and utilisation of renewable energy.

The International System of Quantities (ISQ) consists of the quantities used in physics and in modern science in general, starting with basic quantities such as length and mass, and the relationships between those quantities.

A voluntary association of worldwide organizations that have responsibility for the prediction of hydrodynamic performance of ships and marine installations based on the results of physical and numerical modeling.

The Internet of things describes the network of physical objects, a.k.a. "things" that are embedded with sensors, software, and other technologies for the purpose of connecting and exchanging data with other devices and systems over the Internet.

International Association of Independent Tankers Owners.

Backfeeding also exists in other instances where a location that is typically a generator becomes a consumer.

An electrical circuit or part of a circuit is intrinsically safe if any spark or thermal effect produced normally or accidentally is incapable, under prescribed test conditions, of igniting a prescribed gas mixture.

A special material (36% nickel steel) having extremely small coefficient of thermal expansion. Invar is used as the primary and secondary barrier for the Gas Transport LNG containment systems.

Power conversion from DC to AC.

An inverter, is a power electronic device or circuitry that changes direct current to alternating current.