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
GWENDOLYN GRACE
MMSI 366868850 · Call sign WDG6169
Not yet on Master's MateType
Tug
Flag
USALength
18 m
Beam
7 m
Draft
6 m
Call sign
WDG6169
Official No.
642792
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
32
GWENDOLYN GRACE is an American 18-metre tugboat. She's built with a 7-metre beam and a 6 m draft. She's on record as MMSI 366868850, call sign WDG6169. Add GWENDOLYN GRACE to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card · for working boats
Built for boats that work — like GWENDOLYN GRACE.
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 21:16 UTC
Position
37.7908° N, 122.2877° W
Status
Under way (engine)
Speed
0.1 kn
Course
175°
Destination
MARINE EXPRESS
ETA
01-19 23:30 UTC
Working San Francisco Bay? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put GWENDOLYN GRACE 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 GWENDOLYN GRACE and switch it all on
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About GWENDOLYN GRACE
What kind of vessel is GWENDOLYN GRACE?
GWENDOLYN GRACE is a Tug flagged to United States of America.
Where was GWENDOLYN GRACE last seen?
GWENDOLYN GRACE was last reported in San Francisco Bay in Jun 2026 on public AIS.
What is GWENDOLYN GRACE's MMSI?
GWENDOLYN GRACE's MMSI is 366868850. Call sign WDG6169.
How big is GWENDOLYN GRACE?
GWENDOLYN GRACE is about 18 m long, 7 m on the beam, drawing 6 m.
Is GWENDOLYN GRACE on the Master's Mate Safety Initiative Network?
Not yet. If GWENDOLYN GRACE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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