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.
Passenger
SPIRIT OF CHICAGO
MMSI 367148850 · Call sign WDD4773
Not yet on Master's MateType
Passenger
Flag
USALength
55 m
Beam
12 m
Draft
2 m
Call sign
WDD4773
Official No.
926254
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
46
An American passenger vessel, SPIRIT OF CHICAGO measures 55 metres. She carries a beam measuring 12 metres and a 2 m draft. Her registration reads MMSI 367148850, call sign WDD4773. SPIRIT OF CHICAGO is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard SPIRIT OF CHICAGO safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Last known position · Jun 4, 2026
Position
41.8772° N, 87.6008° W
Sailing Lake Michigan? 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put SPIRIT OF CHICAGO on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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.
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.
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 SPIRIT OF CHICAGO and switch it all on
Free to join · nothing to install to start · cancel anytime
About SPIRIT OF CHICAGO
What kind of vessel is SPIRIT OF CHICAGO?
SPIRIT OF CHICAGO is a Passenger flagged to United States of America.
Where was SPIRIT OF CHICAGO last seen?
SPIRIT OF CHICAGO was last reported in Lake Michigan in Jun 2026 on public AIS.
What is SPIRIT OF CHICAGO's MMSI?
SPIRIT OF CHICAGO's MMSI is 367148850. Call sign WDD4773.
How big is SPIRIT OF CHICAGO?
SPIRIT OF CHICAGO is about 55 m long, 12 m on the beam, drawing 2 m.
Is SPIRIT OF CHICAGO on the Master's Mate Safety Initiative Network?
Not yet. If SPIRIT OF CHICAGO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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