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.
Passenger
CALYPSO
MMSI 270427000 · Call sign OL6135
Not yet on Master's MateType
Passenger
Flag
CZELength
33 m
Beam
6 m
Draft
0.9 m
Call sign
OL6135
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
78
CALYPSO is a ferry flagged in Czechia, 33 metres overall. She carries 6 metres in the beam and a 0.9-metre draft. Officially she's MMSI 270427000, call sign OL6135. Bring CALYPSO aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard CALYPSO safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 03:53 UTC
Position
50.0932° N, 14.4208° E
Status
Moored
Speed
0.0 kn
Course
59°
Wherever CALYPSO 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 · for passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put CALYPSO on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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 CALYPSO and switch it all on
Free to join · nothing to install to start · cancel anytime
About CALYPSO
What kind of vessel is CALYPSO?
CALYPSO is a Passenger flagged to Czechia.
Where was CALYPSO last seen?
CALYPSO was last reported in around 50°N 14°E in Jun 2026 on public AIS.
What is CALYPSO's MMSI?
CALYPSO's MMSI is 270427000. Call sign OL6135.
How big is CALYPSO?
CALYPSO is about 33 m long, 6 m on the beam, drawing 0.9 m.
Is CALYPSO on the Master's Mate Safety Initiative Network?
Not yet. If CALYPSO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.