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
SEBASTIAO MATTOS
Brazil · last seen 3°S 58°W · Jun 2026 · MMSI 710001572
Not yet on Master's MateFlag
BRAFirst reported
Jun 2026
Last reported
Jun 2026
AIS reports
3
SEBASTIAO MATTOS is a Brazilian vessel. Her registration reads MMSI 710001572. Put SEBASTIAO MATTOS on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
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Is SEBASTIAO MATTOS 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 2, 2026
Position
3.1518° S, 58.4394° W
Wherever SEBASTIAO MATTOS 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 SEBASTIAO MATTOS 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 SEBASTIAO MATTOS and switch it all on
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About SEBASTIAO MATTOS
What kind of vessel is SEBASTIAO MATTOS?
SEBASTIAO MATTOS is a vessel flagged to Brazil.
Where was SEBASTIAO MATTOS last seen?
SEBASTIAO MATTOS was last reported in around 3°S 58°W in Jun 2026 on public AIS.
What is SEBASTIAO MATTOS's MMSI?
SEBASTIAO MATTOS's MMSI is 710001572.
Is SEBASTIAO MATTOS on the Master's Mate Safety Initiative Network?
Not yet. If SEBASTIAO MATTOS is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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