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
STUBNITZ
MMSI 211170590 · Call sign Y3WF
Not yet on Master's MateType
Passenger
Flag
DEULength
27 m
Beam
5 m
Draft
1.5 m
Call sign
Y3WF
IMO
5113090
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
STUBNITZ flies the German flag — a 27-metre passenger vessel. She's built with a 5 m beam and a 1.5 m draft. Officially she's MMSI 211170590, call sign Y3WF, IMO 5113090. It's free to add STUBNITZ 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 passenger & charter operators
Keep every soul aboard STUBNITZ 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 11:27 UTC
Position
54.0992° N, 13.3832° E
Status
Moored
Speed
0.0 kn
Course
0°
Destination
GREIFSWALD
Sailing the Baltic 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 STUBNITZ 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 STUBNITZ and switch it all on
Free to join · nothing to install to start · cancel anytime
About STUBNITZ
What kind of vessel is STUBNITZ?
STUBNITZ is a Passenger flagged to Germany.
Where was STUBNITZ last seen?
STUBNITZ was last reported in the Baltic Sea in Jun 2026 on public AIS.
What is STUBNITZ's MMSI?
STUBNITZ's MMSI is 211170590. Call sign Y3WF. IMO 5113090.
How big is STUBNITZ?
STUBNITZ is about 27 m long, 5 m on the beam, drawing 1.5 m.
Is STUBNITZ on the Master's Mate Safety Initiative Network?
Not yet. If STUBNITZ is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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