Boat Crewman Practice Test 2026 - Free Boat Crewman Practice Questions and Study Guide

Mobility is the main idea here. A vest-style design, like many Type III PFDs, focuses on comfort and freedom of movement. The open sides and armholes let you reach, cast, swim, and handle lines without the jacket getting in the way, which is ideal for active boating in calm to moderate conditions. It still provides buoyancy to keep you afloat, but it isn’t built to maximize buoyancy or to turn you face-up automatically, and it’s typically not extremely bulky. So the best description is that it allows a wide range of motion.