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.

Vessel

Hei Hei

MMSI 367551810 · Call sign WDG5932

Not yet on Master's Mate

Flag

USA

Call sign

WDG5932

Official No.

FL6826MV

AIS reports

Hei Hei is an American boat. She's on record as MMSI 367551810, call sign WDG5932. Hei Hei belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.

Free forever · No credit card

Is Hei Hei your boat?

Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.

Claim this boat — free →

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

Wherever Hei Hei 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

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

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

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.

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.

Onboard Cameras

Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.

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.

Hail Any Captain

A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.

Claim Hei Hei and switch it all on

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About Hei Hei

What kind of vessel is Hei Hei?

Hei Hei is a vessel flagged to United States of America.

What is Hei Hei's MMSI?

Hei Hei's MMSI is 367551810. Call sign WDG5932.

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

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