United States of America · MMSI 366714460 · Call sign WCW3921
Not yet on Master's MateRegistered in the United States, LOOSE SCREW is a vessel. She broadcasts as MMSI 366714460, call sign WCW3921. Bring LOOSE SCREW aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put LOOSE SCREW on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.