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
WILLI OSTERMANN
MMSI 211514050 · Call sign DC4989
Not yet on Master's MateType
Passenger
Flag
DEULength
40 m
Beam
8 m
Call sign
DC4989
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
37
WILLI OSTERMANN flies the German flag — a 40-metre ferry. She carries 8 metres in the beam. She's listed under MMSI 211514050, call sign DC4989. WILLI OSTERMANN belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard WILLI OSTERMANN 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
Last known position · Jun 3, 2026
Position
50.9420° N, 6.9634° E
Wherever WILLI OSTERMANN 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 WILLI OSTERMANN 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 WILLI OSTERMANN and switch it all on
Free to join · nothing to install to start · cancel anytime
About WILLI OSTERMANN
What kind of vessel is WILLI OSTERMANN?
WILLI OSTERMANN is a Passenger flagged to Germany.
Where was WILLI OSTERMANN last seen?
WILLI OSTERMANN was last reported in around 51°N 7°E in Jun 2026 on public AIS.
What is WILLI OSTERMANN's MMSI?
WILLI OSTERMANN's MMSI is 211514050. Call sign DC4989.
How big is WILLI OSTERMANN?
WILLI OSTERMANN is about 40 m long, 8 m on the beam.
Is WILLI OSTERMANN on the Master's Mate Safety Initiative Network?
Not yet. If WILLI OSTERMANN is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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