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 Comfort

MMSI 368817000

Not yet on Master's Mate

Flag

USA

Length

272 m

IMO

7390478

AIS reports

USNS Comfort, a craft listed on the the United States registry, measures 272 metres on deck. She broadcasts as MMSI 368817000, IMO 7390478. USNS Comfort is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.

Free forever · No credit card

Is USNS Comfort 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.

Claim this boat — free →

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

Wherever USNS Comfort 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

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

Joining the Safety Initiative Network doesn't just put USNS Comfort 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 Comfort and switch it all on

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About USNS Comfort

What kind of vessel is USNS Comfort?

USNS Comfort is a vessel flagged to United States of America.

What is USNS Comfort's MMSI?

USNS Comfort's MMSI is 368817000. IMO 7390478.

How big is USNS Comfort?

USNS Comfort is about 272 m long.

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

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