In 1986 , the ROK Navy reorganized its fleets : First Fleet , Second Fleet , and Third Fleet .
In 1973 and 1974 , the ROK Navy reorganized its fleets into five Naval Sectors .
In 1986 , the ROK Navy reorganized ROK Navy 's fleets : First Fleet , Second Fleet , and Third Fleet .
In 1973 and 1974 , the ROK Navy reorganized its fleets into five Naval Sectors .