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

RIO GULF

MMSI 368390710 · Call sign WDP8463

Not yet on Master's Mate

Type

Towing Vessel

Flag

USA

Length

27.6 m

Beam

13 m

Draft

5.1 m

Call sign

WDP8463

IMO

1089431

Official No.

1351146

AIS reports

RIO GULF, an American workboat, measures 27.6 metres on deck. She's built with a 13 m beam and a 5.1 m draft. She's listed under MMSI 368390710, call sign WDP8463, IMO 1089431. Working vessels like RIO GULF are never truly alone on the Master's Mate Safety Initiative Network — free, with a fleet on watch.

Free forever · No credit card · for working boats

Built for boats that work — like RIO GULF.

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 RIO GULF 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 RIO GULF 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 RIO GULF and switch it all on

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Claim free → unlock everything

About RIO GULF

What kind of vessel is RIO GULF?

RIO GULF is a Towing Vessel flagged to United States of America.

What is RIO GULF's MMSI?

RIO GULF's MMSI is 368390710. Call sign WDP8463. IMO 1089431.

How big is RIO GULF?

RIO GULF is about 27.6 m long, 13 m on the beam, drawing 5.1 m.

Is RIO GULF on the Master's Mate Safety Initiative Network?

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