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

G.R. GAINER

MMSI 366880120 · Call sign WDB2818

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

27.1 m

Beam

7.6 m

Draft

3.5 m

Call sign

WDB2818

IMO

5037008

Official No.

270843

AIS reports

G.R. GAINER, an American work boat, measures 27.1 metres on deck. Below, she has a beam measuring 7.6 metres and a draft measuring 3.5 metres. On AIS she appears as MMSI 366880120, call sign WDB2818, IMO 5037008. It's free to add G.R. GAINER to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.

Free forever · No credit card · for working boats

Built for boats that work — like G.R. GAINER.

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 G.R. GAINER 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 G.R. GAINER 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 G.R. GAINER and switch it all on

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About G.R. GAINER

What kind of vessel is G.R. GAINER?

G.R. GAINER is a Towing Vessel flagged to United States of America.

What is G.R. GAINER's MMSI?

G.R. GAINER's MMSI is 366880120. Call sign WDB2818. IMO 5037008.

How big is G.R. GAINER?

G.R. GAINER is about 27.1 m long, 7.6 m on the beam, drawing 3.5 m.

Is G.R. GAINER on the Master's Mate Safety Initiative Network?

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