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

USNS William McLean

MMSI 367852000

Not yet on Master's Mate

Flag

USA

Length

210 m

IMO

9552006

AIS reports

Registered in the United States, USNS William McLean is a 210-metre vessel. She's listed under MMSI 367852000, IMO 9552006. USNS William McLean is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

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Is USNS William McLean 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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Wherever USNS William McLean 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 USNS William McLean 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 USNS William McLean and switch it all on

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About USNS William McLean

What kind of vessel is USNS William McLean?

USNS William McLean is a vessel flagged to United States of America.

What is USNS William McLean's MMSI?

USNS William McLean's MMSI is 367852000. IMO 9552006.

How big is USNS William McLean?

USNS William McLean is about 210 m long.

Is USNS William McLean on the Master's Mate Safety Initiative Network?

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