mk-45 naval gun - seaforces online

HOME | US Navy - ships | US Navy - air units | USMC - air units | International Navies | Weapon Systems | Special Reports

  
 
Surface Vessel Weapon System
Mk-45 gun
Mod. 2 (5-inch/54-caliber) / Mod. 4 (5-inch/62-caliber)
 
 
mk-45 model mod. 2 4 5"/54 62 5-inch 54 62 caliber naval gun system

  
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.
  

images


Mk-45 / Mod. 4 (5"/62)

mk-45 5"/62 gun uss forrest sherman ddg-98
Mk-45 / Mod.4 gun aboard USS Forrest Sherman (DDG 98)

mk-45 mod. 4 5"/62-caliber 127mm naval gun uss gravely ddg-107
Mk-45 / Mod.4 gun aboard USS Gravely (DDG 107)

mk-45 mod.4 5-inch 62-caliber gun uss farragut ddg-99
Mk-45 / Mod.4 gun aboard USS Farragut (DDG 99)

mark 45 5-inches 62 caliber gun
Mk-45 / Mod.4 gun aboard USS Bulkeley (DDG 84)

mk-45 5"762 gun uss gridley ddg-101
Mk-45 / Mod.4 gun aboard USS Gridley (DDG 101)

mk-45 mod.4 5-inch 62 caliber gun uss sampson ddg-102
Mk-45 / Mod.4 gun aboard USS Sampson (DDG 102)

mk-45 5" 62-caliber gun uss nitze ddg-94
Mk-45 / Mod.4 gun aboard USS Nitze (DDG 94)

mk-45 gun uss mccampbell ddg-85
Mk-45 / Mod.4 gun aboard USS McCampbell (DDG 85)

mk-45 mod.4 5"/62-caliber gun uss spruance ddg-111
Mk-45 / Mod.4 gun aboard USS Spruance (DDG 111)


Mk-45 / Mod.4 gun aboard USS Nitze (DDG 94)

mk-45 5"/62-caliber gun uss farragut ddg-99
Mk-45 / Mod.4 gun aboard USS Farragut (DDG 99)

mk-45 5"/62 gun 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 Winston S. Churchill (DDG 81)

mk-45 mod.4 5"/62 gun uss mustin ddg-89
Mk-45 / Mod.4 gun aboard USS Mustin (DDG 89)


Mk-45 / Mod.4 gun aboard USS Gridley (DDG 101)

mk-45 mod.4 5"/62 gun uss dewey ddg-105
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 5-inch 62-caliber gun
Mk-45 / Mod.4 gun aboard USS McCampbell (DDG 85)

mk-45 mod.4 5" gun uss momsen ddg-92
Mk-45 / Mod.4 gun aboard USS Momsen (DDG 92)

mk-45 mod.4 gun uss mason ddg-87
Mk-45 / Mod.4 gun aboard USS Mason (DDG 87)


Mk-45 / Mod.4 gun aboard USS Stockdale (DDG 106)

mk-45 5 inch 62 caliber 127mm gun uss nitze ddg-94
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 5"/62 gun uss halsey ddg-97
Mk-45 / Mod.4 gun aboard USS Halsey (DDG 97)

mk-45 mod.4 5-inch 62-caliber gun uss truxtun ddg-103
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 5" 62 caliber gun uss michael murphy ddg-112
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 5"/62 gun uss gravely ddg-107
Mk-45 / Mod.4 gun aboard USS Gravely (DDG 107)

mk-45 5"/62 gun uss halsey ddg-97
Mk-45 / Mod.4 gun aboard USS Halsey (DDG 97)

mk-45 5"/62 gun uss preble ddg-88
Mk-45 / Mod.4 gun aboard USS Preble (DDG 88)

mk-45 5"/62 gun 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 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 5"/62 gun uss jason dunham ddg-109
Mk-45 / Mod.4 gun aboard USS Jason Dunham (DDG 109)

mk-45 mod.4 5"/62 gun uss pinckney ddg-94
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 5"/62 gun uss william p. lawrence ddg-110
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 5"/62 gun uss sterett ddg-104
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 uss donald cook ddg-75
Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)

mk-45 gun 5"/54 caliber uss chancellorsville cg-62
Mk-45 / Mod.2 gun aboard USS Chancellorsville (CG 62)


Mk-45 / Mod.2 gun aboard USS Chancellorsville (CG 62)

mk-45 5"/62 gun
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 5-inch 54-caliber gun uss antietam cg-54
Mk-45 / Mod.2 gun aboard USS Antietam (CG 54)

mk-45 mod.2 5"/54 gun uss donald cook ddg-75
Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)

mk-45 gun uss the sullivans ddg-68
Mk-45 / Mod.2 gun aboard USS The Sullivans (DDG 68)

mk-45 5"/54 gun uss porter ddg-78
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 uss stout ddg-55
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 5" 54-caliber naval gun uss gonzales ddg-66
Mk-45 / Mod.2 gun aboard USS Gonzales (DDG 66)

mk-45 gun uss ross ddg-71
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 5"/54 caliber gun uss shiloh cg-67
Mk-45 / Mod.2 gun aboard USS Shiloh (CG 67)

mk-45 mod.2 5-inch 54-caliber naval gun uss san jacinto cg-56
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 5" naval gun uss leyte gulf cg-55
Mk-45 / Mod.2 gun aboard USS Leyte Gulf (CG 55)

mk-45 5"/54 gun uss ramage ddg-61
Mk-45 / Mod.2 gun aboard USS Ramage (DDG 61)

mk-45 5"/54 gun uss john s. mccain ddg-56
Mk-45 / Mod.2 gun aboard USS John S. McCain (DDG 56)

mk-45 gun uss cole ddg-67
Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)


Mk-45 / Mod.2 gun aboard USS Ross (DDG 71)

mk-45 mod.2 5-inch 54-caliber gun uss cole ddg-67
Mk-45 / Mod.2 gun aboard USS Cole (DDG 67)


Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)

mk-45 5-inch 54-caliber gun 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 Porter (DDG 78)

mk-45 mod.2 gun 5"/54 127mm uss fitzgerald ddg-62
Mk-45 / Mod.2 gun aboard USS Fitzgerald (DDG 62)

mk-45 5"754 gun 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 Laboon (DDG 58)


Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)

mk-45 5"/54 gun uss donald cook ddg-75
Mk-45 / Mod.2 gun aboard USS Donald Cook (DDG 75)

mk-45 mod.2 5-inch 54-caliber gun uss curtis wilbur ddg-54
Mk-45 / Mod.2 gun aboard USS Curtis Wilbur (DDG 54)

mk-45 5" gun uss mitscher ddg-57
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 Cowpens (CG 63)

mk-45 gun
Mk-45 / Mod.2 gun aboard USS Bunker Hill (CG 52)


Mk-45 / Mod.2 gun aboard USS Laboon (DDG 58)

mk-45 5"/54 gun uss mitscher ddg-57
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 gun uss philippine sea cg-58
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 5"754 gun 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 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 5"/54 gun uss leyte gulf cg-55
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 5-inch 54-caliber gun ticonderoga class cruiser
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 gun uss fitzgerald ddg-62
Mk-45 / Mod.2 gun aboard USS Fitzgerald (DDG 62)

mk-45 mod.2 5"/54 gun uss arleigh burke ddg-51
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 5"/54 gun uss chosin cg-65
Mk-45 / Mod.2 gun aboard USS Chosin (CG 65)

mk-45 5"/54 gun uss monterey cg-61
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 5" gun uss ramage ddg-61
Mk-45 / Mod.2 gun aboard USS Ramage (DDG 61)

mk-45 gun uss curtis wilbur ddg-54
Mk-45 / Mod.2 gun aboard USS Curtis Wilbur (DDG 54)


Mk-45 / Mod.2 gun aboard USS Antietam (CG 54)

mk-45 5"/54 gun uss hopper ddg-70
Mk-45 / Mod.2 gun aboard USS Hopper (DDG 70)

mk-45 mod.2 5"/54 gun uss cape st. george cg-71
Mk-45 / Mod.2 gun aboard USS Cape St. George (CG 71)

mk-45 5" gun uss fitzgerald ddg-62
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 gun 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 5"/54 gun uss porter ddg-78
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 5-inch 54-caliber gun uss gettysburgh cg-64
Mk-45 / Mod.2 gun aboard USS Gettysburgh (CG 64)

mkk-45 mod.2 5"/54 gun uss cowpens cg-53
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 5-inch 54-caliber gun arleigh burke class destroyer ddg
Mk-45 / Mod.2 gun aboard USS Arleigh Burke (DDG 51)

mk-45 gun uss russell ddg-59
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 5"/54 gun uss thorn dd-988
Mk-45 / Mod.2 gun aboard USS Thorn (DD 988)


Mk-45 / Mod.2 gun aboard USS Thorn (DD 988)

mk-45 mod.2 5"/54 gun uss compte de grasse ddg-974
Mk-45 / Mod.2 gun aboard USS Compte de Grasse (DD 974)

mk-45 gun uss leftwich dd-984
Mk-45 / Mod.2 gun aboard USS Leftwich (DD 984)


Mk-45 / Mod.2 gun aboard USS Normandy (CG 60)

mk-45 gun uss carney ddg-64
Mk-45 / Mod.2 gun aboard USS Carney (DDG 64)

mk-45 5"/54 gun uss benfold ddg-65
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 5" gun uss kidd ddg-993
Mk-45 / Mod.2 gun aboard USS Kidd (DDG 993)

 
| seaforces.org | Weapon Systems start page |