Thrusters can pivot a vessel in tight spaces and assist docking, but they are only effective at very slow speeds. Which statement best describes their use?

• A. They are a replacement for prudent seamanship in all conditions
• B. They provide safe control only at very slow speeds and do not replace seamanship
• C. They enable high-speed maneuvering in open water
• D. They increase stability at cruising speed

Answer: (B)