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 Stalwart

MMSI 576785000

Not yet on Master's Mate

Flag

VUT

Length

68.3 m

IMO

8835516

AIS reports

Hailing from Vanuatu, USNS Stalwart is a 68.3-metre boat. Look for MMSI 576785000, IMO 8835516. Give USNS Stalwart the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card

Is USNS Stalwart 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 Stalwart 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 Stalwart 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 Stalwart and switch it all on

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Claim free → unlock everything

About USNS Stalwart

What kind of vessel is USNS Stalwart?

USNS Stalwart is a vessel flagged to Vanuatu.

What is USNS Stalwart's MMSI?

USNS Stalwart's MMSI is 576785000. IMO 8835516.

How big is USNS Stalwart?

USNS Stalwart is about 68.3 m long.

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

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