Which ships are typically equipped with the Mark-45 naval gun?

• A. Destroyers and cruisers
• B. Submarines
• C. Amphibious assault ships
• D. Aircraft carriers

Answer: (A)

The main idea here is recognizing which ship platforms are built to carry and effectively use a medium-caliber automatic naval gun. The Mark-45 is a 5-inch, rapid-fire gun designed for surface targets, coastal bombardment, and short-range air defense, so it’s most at home on ships whose missions include independent surface warfare and gunfire support. Destroyers and cruisers are the classic platforms for this weapon because they combine the necessary deck space, stability, and combat roles to employ a gun alongside missiles and other systems. Submarines don’t have decks suited to mounting such a gun, and amphibious assault ships and aircraft carriers prioritize other weapons and systems for their primary missions, making destroyers and cruisers the typical carriers of the Mark-45.