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.
Military
BLUE 4
MMSI 272896200 · Call sign BLUE 4
Not yet on Master's MateType
Military
Flag
UKRLength
52 m
Beam
9 m
Call sign
BLUE 4
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
BLUE 4 is a 52-metre boat, flying the flag of Ukraine. BLUE 4 has a 9-metre beam. She's on record as MMSI 272896200, call sign BLUE 4. BLUE 4 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 BLUE 4 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
Live AIS position · Jun 9, 2026 03:53 UTC
Position
50.8045° N, 1.1077° W
Status
Moored
Speed
0.0 kn
Course
0°
Crossing the English Channel? 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 BLUE 4 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 BLUE 4 and switch it all on
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About BLUE 4
What kind of vessel is BLUE 4?
BLUE 4 is a Military flagged to Ukraine.
Where was BLUE 4 last seen?
BLUE 4 was last reported in the English Channel in Jun 2026 on public AIS.
What is BLUE 4's MMSI?
BLUE 4's MMSI is 272896200. Call sign BLUE 4.
How big is BLUE 4?
BLUE 4 is about 52 m long, 9 m on the beam.
Is BLUE 4 on the Master's Mate Safety Initiative Network?
Not yet. If BLUE 4 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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