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
RV CALLISTA
MMSI 235028893 · Call sign MJUS7
Not yet on Master's MateType
Other
Flag
GBRLength
20 m
Beam
8 m
Draft
2 m
Call sign
MJUS7
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
RV CALLISTA, a boat under British registration, measures 20 metres on deck. Her hull carries a beam of 8 m and a draft of 2 m. Look for MMSI 235028893, call sign MJUS7. Give RV CALLISTA the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.
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Is RV CALLISTA 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 20:17 UTC
Position
50.8913° N, 1.3940° W
Speed
0.0 kn
Course
228°
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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Joining the Safety Initiative Network doesn't just put RV CALLISTA 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 RV CALLISTA and switch it all on
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About RV CALLISTA
What kind of vessel is RV CALLISTA?
RV CALLISTA is a Other flagged to United Kingdom.
Where was RV CALLISTA last seen?
RV CALLISTA was last reported in the English Channel in Jun 2026 on public AIS.
What is RV CALLISTA's MMSI?
RV CALLISTA's MMSI is 235028893. Call sign MJUS7.
How big is RV CALLISTA?
RV CALLISTA is about 20 m long, 8 m on the beam, drawing 2 m.
Is RV CALLISTA on the Master's Mate Safety Initiative Network?
Not yet. If RV CALLISTA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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