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.
Cargo
SONDERBORG
MMSI 255806086 · Call sign CQIW4
Not yet on Master's MateType
Cargo
Flag
PRTLength
158 m
Beam
23 m
Draft
6.5 m
Call sign
CQIW4
IMO
9454242
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
On the Portuguese registry, SONDERBORG is a 158-metre ocean freighter. She has a 23-metre beam and a draft of 6.5 m. On AIS she appears as MMSI 255806086, call sign CQIW4, IMO 9454242. Bring SONDERBORG aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for commercial operators
Eyes on SONDERBORG, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
37.3146° N, 0.9081° W
Transiting the Western Mediterranean? You're never out there alone.
Thousands of cruisers on the Master's Mate Network — ready to help the moment something goes wrong.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SONDERBORG on the map. It hands you the full bridge:
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.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 SONDERBORG and switch it all on
Free to join · nothing to install to start · cancel anytime
About SONDERBORG
What kind of vessel is SONDERBORG?
SONDERBORG is a Cargo flagged to Portugal.
Where was SONDERBORG last seen?
SONDERBORG was last reported in the Western Mediterranean in Jun 2026 on public AIS.
What is SONDERBORG's MMSI?
SONDERBORG's MMSI is 255806086. Call sign CQIW4. IMO 9454242.
How big is SONDERBORG?
SONDERBORG is about 158 m long, 23 m on the beam, drawing 6.5 m.
Is SONDERBORG on the Master's Mate Safety Initiative Network?
Not yet. If SONDERBORG is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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