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
CHATHAM
MMSI 367378840 · Call sign WSX9217
Not yet on Master's MateType
Towing Vessel
Flag
USALength
16.9 m
Beam
6.7 m
Draft
2.5 m
Call sign
WSX9217
IMO
8971530
Official No.
603066
AIS reports
1
Registered in the United States, CHATHAM is a 16.9-metre work boat. Her hull carries a 6.7 m beam and a draft measuring 2.5 metres. She's listed under MMSI 367378840, call sign WSX9217, IMO 8971530. The Master's Mate Safety Initiative Network welcomes CHATHAM — free to join, cruiser-run, and always on watch.
Free forever · No credit card · for working boats
Built for boats that work — like CHATHAM.
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
Wherever CHATHAM roams, 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put CHATHAM 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 CHATHAM and switch it all on
Free to join · nothing to install to start · cancel anytime
About CHATHAM
What kind of vessel is CHATHAM?
CHATHAM is a Towing Vessel flagged to United States of America.
What is CHATHAM's MMSI?
CHATHAM's MMSI is 367378840. Call sign WSX9217. IMO 8971530.
How big is CHATHAM?
CHATHAM is about 16.9 m long, 6.7 m on the beam, drawing 2.5 m.
Is CHATHAM on the Master's Mate Safety Initiative Network?
Not yet. If CHATHAM is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.