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.
Towing Vessel
JEFFREY S
MMSI 367006570 · Call sign WDM6453
Not yet on Master's MateType
Towing Vessel
Flag
USALength
143 m
Beam
23 m
Draft
5.3 m
Call sign
WDM6453
IMO
8117952
Official No.
644590
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
87
JEFFREY S, an utility vessel flying the flag of the United States, measures 143 metres on deck. JEFFREY S has a 23 m beam and a 5.3-metre draft. Her papers read MMSI 367006570, call sign WDM6453, IMO 8117952. JEFFREY S can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for working boats
Built for boats that work — like JEFFREY S.
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 16:12 UTC
Position
48.5504° N, 122.6675° W
Status
Under way (engine)
Speed
8.5 kn
Course
25°
Destination
ANACORTE, WA
ETA
06-09 19:00 UTC
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Joining the Safety Initiative Network doesn't just put JEFFREY S 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 S and switch it all on
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About JEFFREY S
What kind of vessel is JEFFREY S?
JEFFREY S is a Towing Vessel flagged to United States of America.
Where was JEFFREY S last seen?
JEFFREY S was last reported in the Salish Sea in Jun 2026 on public AIS.
What is JEFFREY S's MMSI?
JEFFREY S's MMSI is 367006570. Call sign WDM6453. IMO 8117952.
How big is JEFFREY S?
JEFFREY S is about 143 m long, 23 m on the beam, drawing 5.3 m.
Is JEFFREY S on the Master's Mate Safety Initiative Network?
Not yet. If JEFFREY S is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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