The Norwegian Ship Register (Norwegian: Norsk Ordinært Skipsregister, NOR) is a domestic ship register for Norway. It is managed by the Norwegian Maritime Authority and is physically located in Bergen. The registry has about 12,000 ships, which include both commercial and non-commercial vessels. Ships exceeding 15 meters (49 ft) and mobile offshore installations must be registered, which smaller vessels are volunteer. The Norwegian Shipbuilding Register is a subordinate register.