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.
Other
UPA
MMSI 270724000 · Call sign OL6437
Not yet on Master's MateType
Other
Flag
CZELength
38 m
Beam
8 m
Call sign
OL6437
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
20
UPA is a boat flagged in Czechia, 38 metres overall. She's built with a 8 m beam. She broadcasts as MMSI 270724000, call sign OL6437. Bring UPA aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card
Is UPA 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
50.2346° N, 14.5999° E
Wherever UPA 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 UPA 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 UPA and switch it all on
Free to join · nothing to install to start · cancel anytime
About UPA
What kind of vessel is UPA?
UPA is a Other flagged to Czechia.
Where was UPA last seen?
UPA was last reported in around 50°N 15°E in Jun 2026 on public AIS.
What is UPA's MMSI?
UPA's MMSI is 270724000. Call sign OL6437.
How big is UPA?
UPA is about 38 m long, 8 m on the beam.
Is UPA on the Master's Mate Safety Initiative Network?
Not yet. If UPA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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