Office of Foreign Assets Control

Oil Pollution.

One man Bridge Operation

Qualified Member of the Engine department. Unlicensed members of the engine department who attend to a fully automated engine room.

Office of Naval Research

Offshore Northern Seas Conference

Officer of the deck

Out Of Gauge.

Officer of the watch

Oil Pollution Act of 1990 (USA)

One Person Bridge Operation.

Offshore Petroleum Discharge System.

Organization of Petroleum Exporting Countries

Oil pollution preparedness and response

Ore/Coil Carrier.

Ore/Oil Carrier

Open Shelter Deck

Occupational Safety and Health Administration

Oil Spill Removal Organization

Offshore Supply Vessel