5"/54 Caliber Mark 45 Gun - Users

Users

Australia

Royal Australian Navy

• ANZAC-class frigates: Mod 2 being upgraded Mod 4

In construction:

• Hobart class destroyer: Mod 4

Denmark

Royal Danish Navy

• Absalon-class command and support ships

Greece

Hellenic Navy

• Hydra-class frigates (MEKO 200 HN)

Japan

Japan Maritime Self-Defense Force

• Atago-class guided missile destroyers: Mod 4
• 5000t-class destroyers: Mod 4

Republic of Korea

Republic of Korea Navy

• King Sejong the Great-class guided missile destroyer: Mod 4
• Chungmugong Yi Sun-sin-class guided missile destroyer: Mod 4

New Zealand

Royal New Zealand Navy: Mod 2

• ANZAC-class frigates

Spain

Spanish Navy

• Álvaro de Bazán-class frigates: Mod 2

Taiwan

Republic of China Navy

• Kee Lung-class guided missile destroyers

Thailand

Royal Thai Navy

• Naresuan class frigates

Turkey

Turkish Navy

• Salih Reis-class frigates (MEKO 200 TN II-B)
• Barbaros-class frigates (MEKO 200 TN II-A)
• Yavuz-class frigates (MEKO 200 TN)

United States

United States Navy

Active service ships:

• Tarawa-class amphibious assault ships (later removed)
• Ticonderoga-class guided missile cruisers: Mod 2
  • CG-52: Mod 4 after receiving the cruiser modernization
• Arleigh Burke-class destroyer guided missile destroyer:
  • DDG 51–80: Mod 2
  • DDG 81–112: Mod 4

Decommissioned:

• California-class cruisers
• Virginia-class cruisers
• Kidd-class destroyers
• Spruance-class destroyers