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
History of the Royal Australian Navy s, all to be built in America; in 1980 they announced an additional two vessels both to be built in Australia. The fifteen Australian-built vessels of the made up Australia's patrol boat from 1979 to 2007; they have now been replaced by the fourteen s. The is the newest class of Australian submarines, built in Australia for the Royal Australian Navy. They were constructed by the Australian Submarine Corporation in Adelaide, South Australia, and replace the six s in the Australian fleet. The first vessel, , was laid down in 1990 and commissioned in 1996, with all six vessels of