▁supply ▁ ▁to ▁the ▁three ▁prop eller ▁sh aft s . ▁Top ▁speed ▁is ▁, ▁and ▁the ▁vessels ▁have ▁an ▁end urance ▁of ▁ 6 3 ▁hours ▁at ▁. ▁Each ▁Fish - class ▁vessel ▁can ▁recover ▁up ▁to ▁eight ▁tor ped o es ▁via ▁a ▁wat ert ight ▁stern ▁gate .< ref ▁name = G ille tt 1 0 4 . 5 > G ille tt , ▁' Austral ian ▁and ▁New ▁Zealand ▁War ships ▁since ▁ 1 9 4 6 , ▁pp . ▁ 1 0 4 – 5 </ ref > ▁They ▁are ▁un ar med , ▁and ▁their ▁sensor ▁suite ▁is ▁limited ▁to ▁an ▁I - band ▁navig ational ▁rad ar . ▁N ine ▁personnel ▁make ▁up ▁the ▁crew . ▁ ▁Three ▁vessels ▁were ▁built ▁at ▁William st own ▁D ock yard ▁for ▁the ▁Royal ▁Australian ▁Navy , ▁with ▁TR V ▁ 2 5 4 ▁completed ▁in ▁September ▁ 1 9 7 0 . S au nd ers ▁( ed .), ▁I HS ▁Jane ' s ▁Fight ing ▁Sh ips ▁ 2 0 1 2 – 2 0 1 3 , ▁p . ▁ 3 6 ▁ ▁Oper ational ▁history ▁On ▁entering ▁service , ▁TR V ▁ 2 5 4 ▁was ▁assigned ▁to ▁the ▁naval ▁base ▁ ▁in ▁Sydney . ▁In ▁addition ▁to ▁tor ped o ▁recovery , ▁the ▁vessels ▁were ▁used ▁as ▁d ive ▁tend ers ▁and ▁as ▁training ▁vessels ▁for ▁the ▁Royal ▁Australian ▁Naval ▁Reserve . ▁ ▁In ▁ 1 9 8 3 , ▁the ▁boats ▁were ▁named