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

M/V THERESA B

MMSI 367056060 · Call sign WCY7174

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

17.5 m

Beam

7.3 m

Draft

2.4 m

Call sign

WCY7174

Official No.

561744

AIS reports

M/V THERESA B is an American 17.5-metre work boat. Below, she has 7.3 metres in the beam and a draft measuring 2.4 metres. Officially she's MMSI 367056060, call sign WCY7174. Working vessels like M/V THERESA B are never truly alone on the Master's Mate Safety Initiative Network — free, with a fleet on watch.

Free forever · No credit card · for working boats

Built for boats that work — like M/V THERESA B.

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 M/V THERESA B 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 M/V THERESA B 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 M/V THERESA B and switch it all on

Free to join · nothing to install to start · cancel anytime

Claim free → unlock everything

About M/V THERESA B

What kind of vessel is M/V THERESA B?

M/V THERESA B is a Towing Vessel flagged to United States of America.

What is M/V THERESA B's MMSI?

M/V THERESA B's MMSI is 367056060. Call sign WCY7174.

How big is M/V THERESA B?

M/V THERESA B is about 17.5 m long, 7.3 m on the beam, drawing 2.4 m.

Is M/V THERESA B on the Master's Mate Safety Initiative Network?

Not yet. If M/V THERESA B is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).