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
SAN FRANCISCO
MMSI 636092910 · Call sign D5TZ4
Not yet on Master's MateType
Cargo
Flag
LBRLength
300 m
Beam
40 m
Draft
9.1 m
Call sign
D5TZ4
IMO
9225615
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
22
SAN FRANCISCO, a Liberian general cargo ship, measures 300 metres on deck. Below, she has a 40-metre beam and a draft measuring 9.1 metres. Her papers read MMSI 636092910, call sign D5TZ4, IMO 9225615. SAN FRANCISCO is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for commercial operators
Eyes on SAN FRANCISCO, 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
28.3838° N, 16.1662° W
Transiting the North Atlantic? 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SAN FRANCISCO 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 SAN FRANCISCO and switch it all on
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About SAN FRANCISCO
What kind of vessel is SAN FRANCISCO?
SAN FRANCISCO is a Cargo flagged to Liberia.
Where was SAN FRANCISCO last seen?
SAN FRANCISCO was last reported in the North Atlantic in Jun 2026 on public AIS.
What is SAN FRANCISCO's MMSI?
SAN FRANCISCO's MMSI is 636092910. Call sign D5TZ4. IMO 9225615.
How big is SAN FRANCISCO?
SAN FRANCISCO is about 300 m long, 40 m on the beam, drawing 9.1 m.
Is SAN FRANCISCO on the Master's Mate Safety Initiative Network?
Not yet. If SAN FRANCISCO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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