MMSI 367356910 · Call sign WTB9874
Not yet on Master's MateBRET B is an American 15.4-metre barge. BRET B has a beam measuring 6.1 metres and a 1.6 m draft. She's listed under MMSI 367356910, call sign WTB9874. BRET B is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Joining the Safety Initiative Network doesn't just put BRET B on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.