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

Advantage Spring

MMSI 538006308

Not yet on Master's Mate

Flag

MHL

Length

274 m

IMO

9466582

AIS reports

Advantage Spring, a boat hailing from the Marshall Islands, measures 274 metres on deck. On AIS she appears as MMSI 538006308, IMO 9466582. Advantage Spring is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.

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Is Advantage Spring 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 Advantage Spring 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 Advantage Spring 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 Advantage Spring and switch it all on

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About Advantage Spring

What kind of vessel is Advantage Spring?

Advantage Spring is a vessel flagged to Marshall Islands.

What is Advantage Spring's MMSI?

Advantage Spring's MMSI is 538006308. IMO 9466582.

How big is Advantage Spring?

Advantage Spring is about 274 m long.

Is Advantage Spring on the Master's Mate Safety Initiative Network?

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