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

SHEARWATER

MMSI 367449440 · Call sign WDF4227

Not yet on Master's Mate

Type

Commercial Fishing Vessel

Flag

USA

Length

9.9 m

Beam

3.5 m

Draft

1.2 m

Call sign

WDF4227

Official No.

596535

AIS reports

SHEARWATER, a working fishing boat listed on the the United States registry, measures 9.9 metres on deck. SHEARWATER has a 3.5-metre beam and a 1.2 m draft. She's on record as MMSI 367449440, call sign WDF4227. The Master's Mate Safety Initiative Network welcomes SHEARWATER — free to join, cruiser-run, and always on watch.

Free forever · No credit card · for working captains

Know where the fleet is. Get SHEARWATER 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 SHEARWATER 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 SHEARWATER 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 SHEARWATER and switch it all on

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

Claim free → unlock everything

About SHEARWATER

What kind of vessel is SHEARWATER?

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

What is SHEARWATER's MMSI?

SHEARWATER's MMSI is 367449440. Call sign WDF4227.

How big is SHEARWATER?

SHEARWATER is about 9.9 m long, 3.5 m on the beam, drawing 1.2 m.

Is SHEARWATER on the Master's Mate Safety Initiative Network?

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