Master's MateSafety Initiative Network
The Master's Mate Safety Initiative Network (MMSIn) — like AAA for the ocean, but free & community-driven. Cruisers keeping each other safe: anchor-drag & distress alerts, a verified captains directory, and a watch network that has your back.
Towing Vessel
TERESIA
MMSI 366954490 · Call sign WDH3335
Not yet on Master's MateType
Towing Vessel
Flag
USALength
17.6 m
Beam
6.7 m
Draft
1.7 m
Call sign
WDH3335
Official No.
289919
AIS reports
2
TERESIA is an utility boat listed on the the United States registry, 17.6 metres from stem to stern. She carries a 6.7 m beam and a 1.7-metre draft. Her registration reads MMSI 366954490, call sign WDH3335. Put TERESIA on the free Master's Mate Safety Initiative Network and keep the working fleet looking out for each other.
Free forever · No credit card · for working boats
Built for boats that work — like TERESIA.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever TERESIA roams, you're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
Free with your claim · for working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put TERESIA on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim TERESIA and switch it all on
Free to join · nothing to install to start · cancel anytime
About TERESIA
What kind of vessel is TERESIA?
TERESIA is a Towing Vessel flagged to United States of America.
What is TERESIA's MMSI?
TERESIA's MMSI is 366954490. Call sign WDH3335.
How big is TERESIA?
TERESIA is about 17.6 m long, 6.7 m on the beam, drawing 1.7 m.
Is TERESIA on the Master's Mate Safety Initiative Network?
Not yet. If TERESIA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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