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
H DOUGLAS M
MMSI 367708150 · Call sign WDI5400
Not yet on Master's MateType
Tug
Flag
USALength
24 m
Beam
12 m
Draft
5.1 m
Call sign
WDI5400
IMO
9794161
Official No.
1265978
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
H DOUGLAS M is an American tugboat — 24 metres overall. H DOUGLAS M has a 12 m beam and a 5.1 m draft. Officially she's MMSI 367708150, call sign WDI5400, IMO 9794161. H DOUGLAS M is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for working boats
Built for boats that work — like H DOUGLAS M.
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 00:36 UTC
Position
29.7426° N, 95.1073° W
Status
Moored
Speed
7.3 kn
Course
221°
Working the Gulf of Mexico? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put H DOUGLAS M 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 H DOUGLAS M and switch it all on
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About H DOUGLAS M
What kind of vessel is H DOUGLAS M?
H DOUGLAS M is a Tug flagged to United States of America.
Where was H DOUGLAS M last seen?
H DOUGLAS M was last reported in the Gulf of Mexico in Jun 2026 on public AIS.
What is H DOUGLAS M's MMSI?
H DOUGLAS M's MMSI is 367708150. Call sign WDI5400. IMO 9794161.
How big is H DOUGLAS M?
H DOUGLAS M is about 24 m long, 12 m on the beam, drawing 5.1 m.
Is H DOUGLAS M on the Master's Mate Safety Initiative Network?
Not yet. If H DOUGLAS M is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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