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
REEF SPIRIT
Ashmore and Cartier Islands · last seen 17°S 146°E · Jun 2026 · MMSI 503075440
Not yet on Master's MateFlag
AUSFirst reported
Jun 2026
Last reported
Jun 2026
AIS reports
49
REEF SPIRIT is an Australian craft. On AIS she appears as MMSI 503075440. Give REEF SPIRIT the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
Free forever · No credit card
Is REEF SPIRIT 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
Last known position · Jun 3, 2026
Position
16.8604° S, 145.8379° E
Crossing the Great Barrier Reef? 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 REEF SPIRIT 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 REEF SPIRIT and switch it all on
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About REEF SPIRIT
What kind of vessel is REEF SPIRIT?
REEF SPIRIT is a vessel flagged to Ashmore and Cartier Islands.
Where was REEF SPIRIT last seen?
REEF SPIRIT was last reported in the Great Barrier Reef in Jun 2026 on public AIS.
What is REEF SPIRIT's MMSI?
REEF SPIRIT's MMSI is 503075440.
Is REEF SPIRIT on the Master's Mate Safety Initiative Network?
Not yet. If REEF SPIRIT is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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