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.
Tug
WULF 4
MMSI 211805140 · Call sign DFIA
Not yet on Master's MateType
Tug
Flag
DEULength
26 m
Beam
9 m
Draft
2.7 m
Call sign
DFIA
IMO
9639737
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
39
WULF 4, a German working tug, measures 26 metres on deck. She carries a beam measuring 9 metres and a 2.7-metre draft. She broadcasts as MMSI 211805140, call sign DFIA, IMO 9639737. It's free to add WULF 4 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 working boats
Built for boats that work — like WULF 4.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
53.6530° N, 9.5101° E
Working the Baltic Sea? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put WULF 4 on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 WULF 4 and switch it all on
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About WULF 4
What kind of vessel is WULF 4?
WULF 4 is a Tug flagged to Germany.
Where was WULF 4 last seen?
WULF 4 was last reported in the Baltic Sea in Jun 2026 on public AIS.
What is WULF 4's MMSI?
WULF 4's MMSI is 211805140. Call sign DFIA. IMO 9639737.
How big is WULF 4?
WULF 4 is about 26 m long, 9 m on the beam, drawing 2.7 m.
Is WULF 4 on the Master's Mate Safety Initiative Network?
Not yet. If WULF 4 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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