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
HERCULES 400
MMSI 255707000
Not yet on Master's MateFlag
PRTLength
97 m
IMO
9644952
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
50
HERCULES 400 is a craft registered in Portugal, 97 metres LOA. Find her under MMSI 255707000, IMO 9644952. HERCULES 400 can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.
Free forever · No credit card
Is HERCULES 400 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
41.3139° N, 2.1561° E
Crossing the Western Mediterranean? 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 HERCULES 400 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 HERCULES 400 and switch it all on
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About HERCULES 400
What kind of vessel is HERCULES 400?
HERCULES 400 is a vessel flagged to Portugal.
Where was HERCULES 400 last seen?
HERCULES 400 was last reported in the Western Mediterranean in Jun 2026 on public AIS.
What is HERCULES 400's MMSI?
HERCULES 400's MMSI is 255707000. IMO 9644952.
How big is HERCULES 400?
HERCULES 400 is about 97 m long.
Is HERCULES 400 on the Master's Mate Safety Initiative Network?
Not yet. If HERCULES 400 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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