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

Sean Patrick

MMSI 366849580 · Call sign WDN4524

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

12.2 m

Beam

4.6 m

Draft

1.5 m

Call sign

WDN4524

Official No.

662646

AIS reports

Sean Patrick flies the American flag — a 12.2-metre utility boat. Sean Patrick has a 4.6-metre beam and a 1.5-metre draft. On AIS she shows as MMSI 366849580, call sign WDN4524. Sean Patrick is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

Free forever · No credit card · for working boats

Built for boats that work — like Sean Patrick.

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 Sean Patrick 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 Sean Patrick 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 Sean Patrick and switch it all on

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About Sean Patrick

What kind of vessel is Sean Patrick?

Sean Patrick is a Towing Vessel flagged to United States of America.

What is Sean Patrick's MMSI?

Sean Patrick's MMSI is 366849580. Call sign WDN4524.

How big is Sean Patrick?

Sean Patrick is about 12.2 m long, 4.6 m on the beam, drawing 1.5 m.

Is Sean Patrick on the Master's Mate Safety Initiative Network?

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