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Surface Vessel Weapon System Mk.45 gun Mod. 2 (5-inches/54-caliber) / Mod. 4 (5-inches/62-caliber) |
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| 04/23 |
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The Mk.45 Mod. 2 (5-inch/54-caliber) lightweight gun is a modern U.S. naval
artillery gun mount consisting of a 5-inch (127 mm) L54 Mark 19 gun
on the Mark 45 mount. Originally, the gun was designed and built by
United Defense, it is now manufactured by BAE Systems Land &
Armaments after the former was acquired. The latest Mk.45
Mod. 4 (5-inch/62-caliber) version consist of a longer barrel L62 Mark 36 gun
fitted on the same Mark 45 mount. The gun is designed for use
against surface warships, anti-aircraft and shore bombardment to
support amphibious operations. The gun mount features an automatic loader with a capacity of 20 rounds. These can be fired under full automatic control, taking a little over a minute to exhaust those rounds at maximum fire rate. For sustained use, the gun mount would be occupied by a three-man crew (gun captain, panel operator, and ammunition loader) below deck to keep the gun continuously supplied with ammunition. History: Development started in the 1960s as a replacement for the 5"/54 caliber Mark 42 gun system with a new, lighter, and easier to maintain gun mounting. In USN use, the Mark 45 is used with either the Mk 86 Gun Fire Control System or the Mk 160 Gun Computing System. Since before World War II, 5" has been the standard gun caliber for U.S. Naval ships. Its rate of fire is lower than the British 4.5-inch (114 mm) gun, but it fires a heavier 5" shell which carries a larger burst charge that increases its per-shell effectiveness against aircraft. Variants: Mod 0: used mechanical fuze setter. Two piece rifled construction, with replaceable liner. Mod 1: electronic fuze setter replaces the mechanical one. Made with a unitary construction barrel, which has a life span approximately twice that of the Mark 42 gun. Mod 2: export version of Mod 1, but now used in the US Navy (DDG 51-80 / CG’s) Mod 3: same gun with a new control system; never put into production. Mod 4: longer 62 caliber barrel for more complete propellant combustion, higher velocity, greater range at +20 nm (36 km) and thus more utility for land attack Technical data: Caliber: 5 inch (127 mm) Barrel lenght: Mod.2: 270 inch (6,86 meters) / Mod.4: 310 inch (7,87 meters) Shell: 70 lb (31,75 kg) Elevation: - 15° to + 65° Rate of fire: 16-20 rpm Effective Range: 13 NM (24,1 km) / Mod.4 = 20 NM (37 km) Used on: US Navy Ticonderoga class CG Arleigh Burke class DDG California class CGN Virginia class CGN Spruance class DD Kidd class DDG Tarawa class LHA and ships of the following Navies: Australia, Danmark, Greece, Japan, Taiwan, New Zealand, Spain, Thailand, South Korea, Turkey. |
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Mk.45 / Mod. 4 (5"/62)  Mk-45 / Mod.4 gun aboard USS Forrest Sherman (DDG 98)  Mk-45 / Mod.4 gun aboard USS Gravely (DDG 107)  Mk-45 / Mod.4 gun aboard USS Farragut (DDG 99)  Mk-45 / Mod.4 gun aboard USS Bulkeley (DDG 84)  Mk-45 / Mod.4 gun aboard USS Gridley (DDG 101)  Mk-45 / Mod.4 gun aboard USS Sampson (DDG 102)  Mk-45 / Mod.4 gun aboard USS Nitze (DDG 94)  Mk-45 / Mod.4 gun aboard USS McCampbell (DDG 85)  Mk-45 / Mod.4 gun aboard USS Spruance (DDG 111)  Mk-45 / Mod.4 gun aboard USS Nitze (DDG 94)  Mk-45 / Mod.4 gun aboard USS Farragut (DDG 99)  Mk-45 / Mod.4 gun aboard USS Winston S. Churchill (DDG 81)  Mk-45 / Mod.4 gun aboard USS Winston S. Churchill (DDG 81)  Mk-45 / Mod.4 gun aboard USS Mustin (DDG 89)  Mk-45 / Mod.4 gun aboard USS Gridley (DDG 101)  Mk-45 / Mod.4 gun aboard USS Dewey (DDG 105)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS McCampbell (DDG 85)  Mk-45 / Mod.4 gun aboard USS Bulkeley (DDG 84)  Mk-45 / Mod.4 gun aboard USS Halsey (DDG 97)  Mk-45 / Mod.4 gun aboard USS McCampbell (DDG 85)  Mk-45 / Mod.4 gun aboard USS Momsen (DDG 92)  Mk-45 / Mod.4 gun aboard USS Mason (DDG 87)  Mk-45 / Mod.4 gun aboard USS Stockdale (DDG 106)  Mk-45 / Mod.4 gun aboard USS Nitze (DDG 94)  Mk-45 / Mod.4 gun aboard USS McCampbell (DDG 85)  Mk-45 / Mod.4 gun aboard USS Shoup (DDG 86)  Mk-45 / Mod.4 gun aboard USS Mustin (DDG 89)  Mk-45 / Mod.4 gun aboard USS Halsey (DDG 97)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS Winston S. Churchill (DDG 81)  Mk-45 / Mod.4 gun aboard USS Mustin (DDG 89)  Mk-45 / Mod.4 gun aboard USS Michael Murphy (DDG 112)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS Preble (DDG 88)  Mk-45 / Mod.4 gun aboard USS Gravely (DDG 107)  Mk-45 / Mod.4 gun aboard USS Halsey (DDG 97)  Mk-45 / Mod.4 gun aboard USS Preble (DDG 88)  Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)  Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)  Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)  Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)  Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)  Mk-45 / Mod.4 gun aboard USS Pinckney (DDG 95)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS Nitze (DDG 94)  Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)  Mk-45 / Mod.4 gun aboard USS McCampbell (DDG 85)  Mk-45 / Mod.4 gun aboard USS Mustin (DDG 89)  Mk-45 / Mod.4 gun aboard USS Mustin (DDG 89)  Mk-45 / Mod.4 gun aboard USS William P. Lawrence (DDG 110)  Mk-45 / Mod.4 gun aboard USS Winston S. Churchill (DDG 81)  Mk-45 / Mod.4 gun aboard USS Pinckney (DDG 91)  Mk-45 / Mod.4 gun aboard USS Winston S. Churchill (DDG 81)  Mk-45 / Mod.4 gun aboard USS Nitze (DDG 94)  Mk-45 / Mod.4 gun aboard USS Sterett (DDG 104)  Mk-45 / Mod.4 gun aboard USS Truxtun (DDG 103)  Mk-45 / Mod.4 gun aboard USS Lassen (DDG 82) - - - Mk.45 / Mod. 2 (5"/54)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Chancellorsville (CG 62)  Mk-45 / Mod.2 gun aboard USS Chancellorsville (CG 62)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Antietam (CG 54)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS The Sullivans (DDG 68)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Stout (DDG 55)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Gonzales (DDG 66)  Mk-45 / Mod.2 gun aboard USS Ross (DDG 71)  Mk-45 / Mod.2 gun aboard USS Ross (DDG 71)  Mk-45 / Mod.2 gun aboard USS Princeton (CG 59)  Mk-45 / Mod.2 gun aboard USS Gonzales (DDG 66)  Mk-45 / Mod.2 gun aboard USS Shiloh (CG 67)  Mk-45 / Mod.2 gun aboard USS San Jacinto (CG 56)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Leyte Gulf (CG 55)  Mk-45 / Mod.2 gun aboard USS Ramage (DDG 61)  Mk-45 / Mod.2 gun aboard USS John S. McCain (DDG 56)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Ross (DDG 71)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Fitzgerald (DDG 62)  Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)  Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)  Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)  Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)  Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)  Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Curtis Wilbur (DDG 54)  Mk-45 / Mod.2 gun aboard USS Mitscher (DDG 57)  Mk-45 / Mod.2 gun aboard USS Cape St. George (CG 71)  Mk-45 / Mod.2 gun aboard USS Decatur (DDG 73)  Mk-45 / Mod.2 gun aboard USS Cowpens (CG 63)  Mk-45 / Mod.2 gun aboard USS Bunker Hill (CG 52)  Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)  Mk-45 / Mod.2 gun with stealth-casing aboard HMAS Ballarat (FFH 155)  Mk-45 / Mod.2 gun with stealth-casing aboard HMAS Ballarat (FFH 155)  Mk-45 / Mod.2 gun aboard USS Mitscher (DDG 57)  Mk-45 / Mod.2 gun aboard USS Ross (DDG 71)  Mk-45 / Mod.2 gun aboard USS Ross (DDG 71)  Mk-45 / Mod.2 gun aboard USS Philippine Sea (CG 58)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Antietam (CG 54)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Mobile Bay (CG 53)  Mk-45 / Mod.2 gun aboard USS Leyte Gulf (CG 55)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS Cape St. George (CG 71)  Mk-45 / Mod.2 gun aboard USS Monterey (CG 61)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)  Mk-45 / Mod.2 gun aboard USS San Jacinto (CG 56)  Mk-45 / Mod.2 gun aboard USS Mahan (DDG 72)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Fitzgerald (DDG 62)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Barry (DDG 52)  Mk-45 / Mod.2 gun aboard USS Antietam (CG 54)  Mk-45 / Mod.2 gun aboard USS Chosin (CG 65)  Mk-45 / Mod.2 gun aboard USS Monterey (CG 61)  Mk-45 / Mod.2 gun aboard USS Chancellorsville (CG 62)  Mk-45 / Mod.2 gun aboard USS Fife (DD 991)  Mk-45 / Mod.2 gun aboard USS Ramage (DDG 61)  Mk-45 / Mod.2 gun aboard USS Curtis Wilbur (DDG 54)  Mk-45 / Mod.2 gun aboard USS Antietam (CG 54)  Mk-45 / Mod.2 gun aboard USS Hopper (DDG 70)  Mk-45 / Mod.2 gun aboard USS Cape St. George (CG 71)  Mk-45 / Mod.2 gun aboard USS Fitzgerald (DDG 62)  Mk-45 / Mod.2 gun aboard USS Cape St. George (CG 71)  Mk-45 / Mod.2 gun aboard USS Stout (DDG 55)  Mk-45 / Mod.2 gun aboard USS Stout (DDG 55)  Mk-45 / Mod.2 gun aboard USS Stout (DDG 55)  Mk-45 / Mod.2 gun aboard USS John S. McCain (DDG 56)  Mk-45 / Mod.2 gun aboard USS Stout (DDG 55)  Mk-45 / Mod.2 gun aboard USS Porter (DDG 78)  Mk-45 / Mod.2 gun aboard USS Chosin (CG 65)  Mk-45 / Mod.2 gun aboard USS Chosin (CG 65)  Mk-45 / Mod.2 gun aboard USS Monterey (CG 61)  Mk-45 / Mod.2 gun aboard USS John S. McCain (DDG 56)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Monterey (CG 61)  Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)  Mk-45 / Mod.2 gun aboard USS Antietam (CG 54)  Mk-45 / Mod.2 gun aboard USS Mobile Bay (CG 53)  Mk-45 / Mod.2 gun aboard USS Fitzgerald (DDG 62)  Mk-45 / Mod.2 gun aboard USS Gettysburgh (CG 64)  Mk-45 / Mod.2 gun aboard USS Cowpens (CG 63)  Mk-45 / Mod.2 gun aboard USS Ramage (DDG 61)  Mk-45 / Mod.2 gun aboard USS Mahan (DDG 72)  Mk-45 / Mod.2 gun aboard USS Philippine Sea (CG 58)   Sailors monitor an MK 45 5-inch gun console and mount aboard USS Philippine Sea (CG 58)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Russell (DDG 59)  Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)  Mk-45 / Mod.2 gun aboard USS Thorn (DD 988)  Mk-45 / Mod.2 gun aboard USS Thorn (DD 988)  Mk-45 / Mod.2 gun aboard USS Compte de Grasse (DD 974)  Mk-45 / Mod.2 gun aboard USS Leftwich (DD 984)  Mk-45 / Mod.2 gun aboard USS Normandy (CG 60)  Mk-45 / Mod.2 gun aboard USS Carney (DDG 64)  Mk-45 / Mod.2 gun aboard USS Benfold (DDG 65)  Mk-45 / Mod.2 gun and Mk-141 Harpoon launcher aboard USS Yorktown (CG 48)  Mk-45 / Mod.2 gun aboard USS Kidd (DDG 993) |
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