5"/38 Mark 12

History

The 5"/38 Mark 12 gun was designed for new destroyers being build in the 1930's as dual purpose gun, but they ended up on nearly every major US warship built between 1934 and 1948 and was still used on new construction as late as the 1960's. Over it's operational lifetime these guns were fitted in various mountings.

Single open or open-back shield pedestal mounts

Types

• Mark 21

• Mark 21 Mod 16

Used on

• Farragut
• Mahan
• Yorktown (Mod 16)
• Enterprise (Mod 16)
• Marcillio Dias class???
• Acre class?

Improved Pedestal mounts

Types

• Mark 24 Mod 0

• Mark 24 Mod 1

• Mark 24 Mod 2
• Mark 24 Mod 11

Used on

• Dunlap (Mod 0 and Mod 1, stern mountings)
• Gridley (Mod 0 and Mod 1, stern mountings)
• Bagley (Mod 0 and Mod 1, stern mountings)
• Wichita (Mod 1)
• Wasp (Mod 1)
• Hornet (Mod 2)
• Independence (Mod 11)
• Essex (Mod 11)
• Acre class?

Single enclosed base ring mounts

Types

• Mark 25
• Mark 30 Mod 0

• Mark 30 Mod 2
• Mark 30 Mod 4
• Mark 30 Mod 5
• Mark 30 Mod 6
• Mark 30 Mod 7
• Mark 30 Mod 8
• Mark 30 Mod 61

• Mark 30 Mod 65
• Mark 30 Mod 69
• Mark 30 Mod 71
• Mark 30 Mod 75
• Mark 30 Mod 77

Used on

• Dunlap (Mark 25, bow mounts)
• Gridley (Mark 25, bow mounts)
• Bagley (Mark 25, bow mounts)
• Wichita (Mark 30 Mods 0, 4 and 5)
• Benham (Mark 30 Mod 0 and 2, bow mounts)
• Sims (Mark 30 Mod 0 and 2)
• Benson class (Different mods of Mark 30)
• Fletcher class (Different mods of Mark 30)
• Rudderdow class (Mark 30 mods 61,69,71, 75 or 77 for the bow mount, Mod 65 for the aft mount)
• John C. Butler class (Mark 30 mods 61,69,71, 75 or 77 for the bow mount, Mod 65 for the aft mount)
• Acre class (Mark 25 or Mark 30?)
• HMS Delhi (Mark 30 mods 6,7 and 8)
• Brooke class (Mark 30)
• Garcia class (Mark 30)
• CGN-9 Long Beach (Mark 30)
• Hamilton class (Mark 30)

Single open base ring mounts

Types

• Mark 30 Mod 1

• Mark 30 Mod 80

Used on

• Benham (Mod 1, stern mounts)
• Sims (Mod 1)
• Benson (Mod 1)
• Gleaves (Mod 1)
• various USN escort carriers (Mod 80)
• Armeer (Mark 30 Mod 80?)
• Assistance (Mark 30)
• Albany (Mark 30)

Twin enclosed base ring mounts

Types

• Mark 22

• Mark 28 Mod 0
• Mark 28 Mod 2
• Mark 29

• Mark 32 Mod 0

• Mark 32 Mod 2
• Mark 32 Mod 4

• Mark 38 Mod 1

• Mark 38 Mod 2

Used on

• Porter class (Mark 22)
• Somers class (Mark 22)
• North Carolina class (Mark 28 Mod 0)
• South Dakota class (Mark 28 Mod 0)
• Iowa class (Mark 28 Mod 2)
• St. Louis class (Mk 29)
• Atlanta class (Mk 29)
• Oakland class (Mk 29)
• Juneau class (Mk 29)
• Des Moines class (Mk 32 Mod 0)
• Baltimore (Mk 32 Mod 0)
• Oregon City (Mk 32 Mod 0)
• Cleveland (Mk 32 Mod 0)
• Fargo (Mk 32 Mod 0)
• Essex class (Mk 32 Mod 0, Mod 2, Mod 4)
• Alaska class (Mk 32 Mod 4)
• A.M. Sumner class (Mk 38 Mod 1, Mod 2)
• Gearing class (Mk 38 Mod 1, Mod 2)
• Peder Skram (Mark 38)
• Impetuoso class (Mark 38)
• San Girorgio class (Mark 38)

See also

http://www.navweaps.com/Weapons/WNUS_5-38_mk12.php