MMSI 257969700 · Call sign LF5331
Not yet on Master's MateTENNOY, a cargo vessel wearing Norwegian colours, measures 13 metres on deck. TENNOY has a beam of 5 m. She's on record as MMSI 257969700, call sign LF5331. TENNOY can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
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 TENNOY on the map. It hands you the full bridge:
© 2026 Master’s Mate. All rights reserved.