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.

Research Vessel

RV Marcus G. Langseth

MMSI 367059880 · Call sign WDC6698

Not yet on Master's Mate

Type

Research Vessel

Flag

USA

Length

71.5 m

Beam

17 m

Draft

7.6 m

Call sign

WDC6698

IMO

9010137

Official No.

1310186

AIS reports

Registered in the United States, RV Marcus G. Langseth is a 71.5-metre boat. RV Marcus G. Langseth has a 17-metre beam and a 7.6 m draft. She broadcasts as MMSI 367059880, call sign WDC6698, IMO 9010137. Give RV Marcus G. Langseth the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

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Is RV Marcus G. Langseth 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.

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

Wherever RV Marcus G. Langseth roams, you're never out there alone.

Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.

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

Joining the Safety Initiative Network doesn't just put RV Marcus G. Langseth 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.

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About RV Marcus G. Langseth

What kind of vessel is RV Marcus G. Langseth?

RV Marcus G. Langseth is a Research Vessel flagged to United States of America.

What is RV Marcus G. Langseth's MMSI?

RV Marcus G. Langseth's MMSI is 367059880. Call sign WDC6698. IMO 9010137.

How big is RV Marcus G. Langseth?

RV Marcus G. Langseth is about 71.5 m long, 17 m on the beam, drawing 7.6 m.

Is RV Marcus G. Langseth on the Master's Mate Safety Initiative Network?

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