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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
JEFFREY M
MMSI 366951730 · Call sign WSX6846
Not yet on Master's MateType
Tug
Flag
USALength
26 m
Beam
8 m
Draft
5.2 m
Call sign
WSX6846
Official No.
600733
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
JEFFREY M is an American working tug, 26 metres from stem to stern. She carries a 8-metre beam and a 5.2-metre draft. Find her under MMSI 366951730, call sign WSX6846. Sign JEFFREY M up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for working boats
Built for boats that work — like JEFFREY M.
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
Live AIS position · Jun 9, 2026 16:45 UTC
Position
37.9230° N, 122.3672° W
Status
Moored
Speed
0.0 kn
Course
359°
Destination
RICHMOND 18
ETA
06-04 09:00 UTC
Working San Francisco Bay? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put JEFFREY M 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 JEFFREY M and switch it all on
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About JEFFREY M
What kind of vessel is JEFFREY M?
JEFFREY M is a Tug flagged to United States of America.
Where was JEFFREY M last seen?
JEFFREY M was last reported in San Francisco Bay in Jun 2026 on public AIS.
What is JEFFREY M's MMSI?
JEFFREY M's MMSI is 366951730. Call sign WSX6846.
How big is JEFFREY M?
JEFFREY M is about 26 m long, 8 m on the beam, drawing 5.2 m.
Is JEFFREY M on the Master's Mate Safety Initiative Network?
Not yet. If JEFFREY M is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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