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)

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)

Single enclosed base ring mounts

Types

• Mark 25
• Mark 30 Mod 0

• Mark 30 Mod 1
• Mark 30 Mod 2
• Mark 30 Mod 4
• Mark 30 Mod 5
• 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)

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 escort carriers (Mod 80)

See also

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