When was the MK 45 gun first deployed?

When was the MK 45 gun first deployed?

• A. 1965
• B. 1971
• C. 1982
• D. 1978

Answer: (B)

The main idea here is when the Mk 45 gun first entered service. The Mk 45 is a lightweight 5-inch/54-caliber naval gun designed for dual‑purpose use on surface ships. Its Mod 0 configuration was finalized in the late 1960s, and ships began to be equipped with and deploy the Mk 45 around 1971. This marks the initial entry of the gun into active service. So, 1971 is the year when the Mk 45 first deployed. The later dates reflect subsequent upgrades or broader fleet adoption, not the initial introduction.

The main idea here is when the Mk 45 gun first entered service. The Mk 45 is a lightweight 5-inch/54-caliber naval gun designed for dual‑purpose use on surface ships. Its Mod 0 configuration was finalized in the late 1960s, and ships began to be equipped with and deploy the Mk 45 around 1971. This marks the initial entry of the gun into active service.

So, 1971 is the year when the Mk 45 first deployed. The later dates reflect subsequent upgrades or broader fleet adoption, not the initial introduction.