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.

Commercial Fishing Vessel

Maria Sandi

MMSI 367778640 · Call sign WDJ4537

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

21.8 m

Beam

6.7 m

Draft

2.4 m

Call sign

WDJ4537

Official No.

912281

AIS reports

Maria Sandi is an American 21.8-metre commercial fishing boat. Her hull carries a 6.7-metre beam and a draft measuring 2.4 metres. On AIS she appears as MMSI 367778640, call sign WDJ4537. Maria Sandi is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.

Free forever · No credit card · for working captains

Know where the fleet is. Get Maria Sandi home safe.

Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.

Keep the fleet in sight — free →

Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers

Wherever Maria Sandi 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 captains

The most powerful cruising platform ever built — yours, free.

Joining the Safety Initiative Network doesn't just put Maria Sandi on the map. It hands you the full bridge:

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.

Systems Monitoring

Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.

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 Maria Sandi and switch it all on

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

Claim free → unlock everything

About Maria Sandi

What kind of vessel is Maria Sandi?

Maria Sandi is a Commercial Fishing Vessel flagged to United States of America.

What is Maria Sandi's MMSI?

Maria Sandi's MMSI is 367778640. Call sign WDJ4537.

How big is Maria Sandi?

Maria Sandi is about 21.8 m long, 6.7 m on the beam, drawing 2.4 m.

Is Maria Sandi on the Master's Mate Safety Initiative Network?

Not yet. If Maria Sandi is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).