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
Topaz Ob
MMSI 273426290
Not yet on Master's MateFlag
RUSLength
123 m
IMO
9812274
AIS reports
2
On the Russian registry, Topaz Ob is a 123-metre craft. Officially she's MMSI 273426290, IMO 9812274. Sign Topaz Ob up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card
Is Topaz Ob 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 Topaz Ob 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 Topaz Ob 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 Topaz Ob and switch it all on
Free to join · nothing to install to start · cancel anytime
About Topaz Ob
What kind of vessel is Topaz Ob?
Topaz Ob is a vessel flagged to Russia.
What is Topaz Ob's MMSI?
Topaz Ob's MMSI is 273426290. IMO 9812274.
How big is Topaz Ob?
Topaz Ob is about 123 m long.
Is Topaz Ob on the Master's Mate Safety Initiative Network?
Not yet. If Topaz Ob is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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