Battle Cruiser battleship navy Navy ship ship US Navy warship world war II Asia boats helicopters Hong Kong jets ocean war american docked helicopter modern military planes several side graphic light rays water wood Australia maritime Melbourne museum nautical naval shipping boat frigate Portuguese demining equipment explosive minehunters minesweeper safety sea security anchor bow chinese crew cruise cruise ship cultural culture decks decorated decorative harbor harbour heights high historic levels observers observing ornamental passengers perspectives protection railing rails spectators symbol symbolic tiers tourism tourist ship tourists viewing decks views war-ship anti-aircraft armour artillery Blyskawica bofors cannon destroyer warfare