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.
Tug
GL OSTRANDER
MMSI 366937490 · Call sign WCV7620
Not yet on Master's MateType
Tug
Flag
USALength
178 m
Beam
21 m
Draft
5.1 m
Call sign
WCV7620
IMO
7501106
Official No.
571493
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
48
GL OSTRANDER is an American tugboat, measuring 178 metres. GL OSTRANDER has a beam of 21 m and a 5.1 m draft. Her papers read MMSI 366937490, call sign WCV7620, IMO 7501106. GL OSTRANDER belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
Free forever · No credit card · for working boats
Built for boats that work — like GL OSTRANDER.
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
Last known position · Jun 4, 2026
Position
42.0645° N, 87.3236° W
Working 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.
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The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put GL OSTRANDER 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 GL OSTRANDER and switch it all on
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About GL OSTRANDER
What kind of vessel is GL OSTRANDER?
GL OSTRANDER is a Tug flagged to United States of America.
Where was GL OSTRANDER last seen?
GL OSTRANDER was last reported in Lake Michigan in Jun 2026 on public AIS.
What is GL OSTRANDER's MMSI?
GL OSTRANDER's MMSI is 366937490. Call sign WCV7620. IMO 7501106.
How big is GL OSTRANDER?
GL OSTRANDER is about 178 m long, 21 m on the beam, drawing 5.1 m.
Is GL OSTRANDER on the Master's Mate Safety Initiative Network?
Not yet. If GL OSTRANDER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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