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.
Cargo
CALISTO
MMSI 244630748 · Call sign PI8597
Not yet on Master's MateType
Cargo
Flag
NLDLength
183 m
Beam
12 m
Call sign
PI8597
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
CALISTO, a cargo ship listed on the the Netherlands registry, measures 183 metres on deck. She's built with 12 metres in the beam. Officially she's MMSI 244630748, call sign PI8597. Bring CALISTO aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for commercial operators
Eyes on CALISTO, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
51.3143° N, 4.2763° E
Transiting the North Sea? 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 · for commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put CALISTO on the map. It hands you the full bridge:
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim CALISTO and switch it all on
Free to join · nothing to install to start · cancel anytime
About CALISTO
What kind of vessel is CALISTO?
CALISTO is a Cargo flagged to Netherlands.
Where was CALISTO last seen?
CALISTO was last reported in the North Sea in Jun 2026 on public AIS.
What is CALISTO's MMSI?
CALISTO's MMSI is 244630748. Call sign PI8597.
How big is CALISTO?
CALISTO is about 183 m long, 12 m on the beam.
Is CALISTO on the Master's Mate Safety Initiative Network?
Not yet. If CALISTO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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