The 5-inch /54-caliber lightweight gun is a U.S. naval artillery gun mount consisting of a 5 in L54 Mark 19 gun on the Mark 45 mount. The later 62-calibre-long version consists of a longer-barrel L62
5-inch/62-caliber Mark 45 Mod 4, in flat-panel gun turret, test firing on USS Forrest Sherman
Mod 2
Mod 4
A Mod 2 gun aboard the Australian Anzac-class frigate HMAS Arunta
Hobart-class destroyer
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The Hobart class is a ship class of three air warfare destroyers built for the Royal Australian Navy. Planning for ships to replace the Adelaide-class frigates and restore the capability last exhibite
HMAS Hobart in December 2017
The two competing designs for the Australian AWD project: Arleigh Burke-class destroyer USS Donald Cook leading Álvaro de Bazán-class frigate Álvaro de Bazán in 2005
HMAS Hobart, left, and HMAS Brisbane at ASC Osborne in June 2016.
HMAS Hobart's mast and upper superstructure, showing many of the ship's sensors