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.
Military
SD-13
MMSI 261466000 · Call sign SQWC
Not yet on Master's MateType
Military
Flag
POLLength
44 m
Beam
8 m
Draft
2.5 m
Call sign
SQWC
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
38
SD-13 flies the Polish flag — a 44-metre vessel. She carries a beam measuring 8 metres and a 2.5-metre draft. On AIS she shows as MMSI 261466000, call sign SQWC. SD-13 belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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Is SD-13 your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
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Last known position · Jun 3, 2026
Position
54.5391° N, 18.5514° E
Crossing 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.
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Joining the Safety Initiative Network doesn't just put SD-13 on the map. It hands you the full bridge:
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.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim SD-13 and switch it all on
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About SD-13
What kind of vessel is SD-13?
SD-13 is a Military flagged to Poland.
Where was SD-13 last seen?
SD-13 was last reported in the Baltic Sea in Jun 2026 on public AIS.
What is SD-13's MMSI?
SD-13's MMSI is 261466000. Call sign SQWC.
How big is SD-13?
SD-13 is about 44 m long, 8 m on the beam, drawing 2.5 m.
Is SD-13 on the Master's Mate Safety Initiative Network?
Not yet. If SD-13 is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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