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
COUPERUS
MMSI 244710835 · Call sign PD4340
Not yet on Master's MateType
Passenger
Flag
NLDLength
20 m
Beam
4 m
Draft
0.2 m
Call sign
PD4340
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
COUPERUS, an excursion vessel under Dutch registration, measures 20 metres on deck. COUPERUS has a beam measuring 4 metres and a 0.2-metre draft. Her registration reads MMSI 244710835, call sign PD4340. Put COUPERUS on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard COUPERUS 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 11:20 UTC
Position
52.3527° N, 4.8865° E
Status
Under way (engine)
Speed
0.0 kn
Course
70°
Destination
AMSTERDAM
Sailing 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put COUPERUS 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 COUPERUS and switch it all on
Free to join · nothing to install to start · cancel anytime
About COUPERUS
What kind of vessel is COUPERUS?
COUPERUS is a Passenger flagged to Netherlands.
Where was COUPERUS last seen?
COUPERUS was last reported in the North Sea in Jun 2026 on public AIS.
What is COUPERUS's MMSI?
COUPERUS's MMSI is 244710835. Call sign PD4340.
How big is COUPERUS?
COUPERUS is about 20 m long, 4 m on the beam, drawing 0.2 m.
Is COUPERUS on the Master's Mate Safety Initiative Network?
Not yet. If COUPERUS is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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