Which class resembles open-ocean escort and patrol, slower, with one screw, and carries 2 SH-60B helicopters?

• A. Amphibious Command Ship (LCC)
• B. Destroyer Tender (AD)
• C. Carrier/Nuclear Powered Carrier (CV/CVN)
• D. Guided Missile Frigates (FFG)

Answer: (D)

Open-ocean escort and patrol duties are the bread-and-butter mission of frigates: smaller, cost-efficient ships designed to accompany larger vessels or convoys, providing anti-submarine, anti-surface, and surveillance support over long endurance at sea. The description highlights a slower speed, which is typical for escort-focused designs that prioritize range and persistence over sprint performance. A single screw points to a simpler propulsion layout common on many frigate classes, emphasizing steadier operation with lower maintenance complexity. The SH-60B helicopters are part of the LAMPS capability, extending the ship’s reach for airborne ASW and reconnaissance; frigates built for open-ocean patrol are equipped to operate two such helicopters, giving them far greater sensing and striking ability at range than a ship without aviation assets.

Among the options, the Guided Missile Frigates match all these traits: they’re designed for escort and patrol duties, have moderate, not high, speeds, typically rely on a single propeller for propulsion, and are equipped to carry and operate SH-60B helicopters for extended ASW and surveillance. The other classes focus on very different roles—carriers on air power, destroyer tenders on support and resupply, and amphibious command ships on command-and-control for land operations—so they don’t align as closely with the described characteristics.