Commodore (Royal Navy) Commodore (Royal Navy) Commodore (Cdre) is a rank of the Royal Navy above captain and below rear admiral. It has a NATO ranking code of OF-6. The rank is equivalent to brigadier in the British Army and Royal Marines and to air commodore in the Royal Air Force. The rank of commodore was introduced during the 17th century in November 1674 (though not legally established until 1806). In 1684 the navy introduced two classes of commodore, the first known as a "Commodore Distinction" and the other a "Commodore Ordinary"; these would later evolve into commodores first and second class. In
National Museum of the Royal Navy National Museum of the Royal Navy The National Museum of the Royal Navy was created in early 2009 to act as a single non-departmental public body for the museums of the Royal Navy. With venues across the United Kingdom, the museums detail the history of the Royal Navy operating on and under the sea, on land and in the air. The National Museum of the Royal Navy Museums: Ships of the National Museum of the Royal Navy include: In the financial year starting 1 April 2009, the NMRN co-ordinated Grants in Aid from the UK Ministry of Defence and the