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.
Tanker
CALLISTO
MMSI 211694420 · Call sign DG8755
Not yet on Master's MateType
Tanker
Flag
DEULength
110 m
Beam
13 m
Draft
1.5 m
Call sign
DG8755
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
59
CALLISTO is a German tank ship — 110 metres overall. CALLISTO has a 13-metre beam and a 1.5 m draft. On the registers she's MMSI 211694420, call sign DG8755. It's free to add CALLISTO to the Master's Mate Safety Initiative Network — like AAA for the ocean, run by the cruisers who use it.
Free forever · No credit card · for commercial operators
Eyes on CALLISTO, 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 3, 2026
Position
51.8760° N, 4.2927° 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 CALLISTO 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 CALLISTO and switch it all on
Free to join · nothing to install to start · cancel anytime
About CALLISTO
What kind of vessel is CALLISTO?
CALLISTO is a Tanker flagged to Germany.
Where was CALLISTO last seen?
CALLISTO was last reported in the North Sea in Jun 2026 on public AIS.
What is CALLISTO's MMSI?
CALLISTO's MMSI is 211694420. Call sign DG8755.
How big is CALLISTO?
CALLISTO is about 110 m long, 13 m on the beam, drawing 1.5 m.
Is CALLISTO on the Master's Mate Safety Initiative Network?
Not yet. If CALLISTO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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