What is the speed of the LCU?

• A. 20 knots
• B. 5 knots
• C. 10 knots
• D. 15 knots

Answer: (C)

This question tests the typical operating speed of an LCU, which is designed to transport vehicles and troops to shore at a stable, manageable pace. The standard speed for a conventional LCU is about 10 knots, a balance that allows safe approach to the beach, good maneuverability in surf, and reasonable fuel efficiency for its cargo mission. In practical terms, 10 knots is roughly 11.5 mph or 19 km/h, fast enough to deliver loads in a timely fashion but slow enough to maintain hull stability and control when near shore. Speeds like 5 knots would be unnecessarily slow for transit and complicate timing, while 15 or 20 knots would require more power and could compromise stability and efficiency for a cargo-focused craft.