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
LADY SEMA
MMSI 371043000 · Call sign H9AN
Not yet on Master's MateType
Cargo
Flag
PANLength
137 m
Beam
23 m
Draft
7 m
Call sign
H9AN
IMO
9233624
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
33
LADY SEMA is a Panamanian freighter, 137 metres long. Her hull carries a 23 m beam and a draft of 7 m. Officially she's MMSI 371043000, call sign H9AN, IMO 9233624. LADY SEMA 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 commercial operators
Eyes on LADY SEMA, 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 3, 2026
Position
40.9659° N, 28.9938° E
Transiting the Bosphorus? 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 LADY SEMA 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 LADY SEMA and switch it all on
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About LADY SEMA
What kind of vessel is LADY SEMA?
LADY SEMA is a Cargo flagged to Panama.
Where was LADY SEMA last seen?
LADY SEMA was last reported in the Bosphorus in Jun 2026 on public AIS.
What is LADY SEMA's MMSI?
LADY SEMA's MMSI is 371043000. Call sign H9AN. IMO 9233624.
How big is LADY SEMA?
LADY SEMA is about 137 m long, 23 m on the beam, drawing 7 m.
Is LADY SEMA on the Master's Mate Safety Initiative Network?
Not yet. If LADY SEMA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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