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
Union Mark
MMSI 538008439
Not yet on Master's MateFlag
MHLLength
179.9 m
IMO
9775153
AIS reports
2
On the Marshall Islands registry, Union Mark is a 179.9-metre craft. Look for MMSI 538008439, IMO 9775153. Give Union Mark the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
Free forever · No credit card
Is Union Mark 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 Union Mark 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 Union Mark 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 Union Mark and switch it all on
Free to join · nothing to install to start · cancel anytime
About Union Mark
What kind of vessel is Union Mark?
Union Mark is a vessel flagged to Marshall Islands.
What is Union Mark's MMSI?
Union Mark's MMSI is 538008439. IMO 9775153.
How big is Union Mark?
Union Mark is about 179.9 m long.
Is Union Mark on the Master's Mate Safety Initiative Network?
Not yet. If Union Mark is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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