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.

Offshore Supply Vessel

SPIRIT RIVER

MMSI 366758750 · Call sign WCY7806

Not yet on Master's Mate

Type

Offshore Supply Vessel

Flag

USA

Length

65.3 m

Beam

14.6 m

Draft

4.9 m

Call sign

WCY7806

IMO

9204570

Official No.

1073988

AIS reports

Registered in the United States, SPIRIT RIVER is a 65.3-metre working craft. Her hull carries a 14.6-metre beam and a draft of 4.9 m. On AIS she appears as MMSI 366758750, call sign WCY7806, IMO 9204570. Put SPIRIT RIVER on the free Master's Mate Safety Initiative Network and keep the working fleet looking out for each other.

Free forever · No credit card · for working boats

Built for boats that work — like SPIRIT RIVER.

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 SPIRIT RIVER 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 SPIRIT RIVER 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 SPIRIT RIVER and switch it all on

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

Claim free → unlock everything

About SPIRIT RIVER

What kind of vessel is SPIRIT RIVER?

SPIRIT RIVER is a Offshore Supply Vessel flagged to United States of America.

What is SPIRIT RIVER's MMSI?

SPIRIT RIVER's MMSI is 366758750. Call sign WCY7806. IMO 9204570.

How big is SPIRIT RIVER?

SPIRIT RIVER is about 65.3 m long, 14.6 m on the beam, drawing 4.9 m.

Is SPIRIT RIVER on the Master's Mate Safety Initiative Network?

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