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.
Offshore Supply Vessel
Barthel Tide
MMSI 338088000 · Call sign WDH4108
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
66.2 m
Beam
14 m
Draft
5.2 m
Call sign
WDH4108
IMO
9415715
Official No.
973802
AIS reports
5
Barthel Tide is an American 66.2-metre utility boat. She carries a beam measuring 14 metres and a 5.2-metre draft. On AIS she shows as MMSI 338088000, call sign WDH4108, IMO 9415715. Sign Barthel Tide up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for working boats
Built for boats that work — like Barthel Tide.
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 Barthel Tide 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 Barthel Tide 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 Barthel Tide and switch it all on
Free to join · nothing to install to start · cancel anytime
About Barthel Tide
What kind of vessel is Barthel Tide?
Barthel Tide is a Offshore Supply Vessel flagged to United States of America.
What is Barthel Tide's MMSI?
Barthel Tide's MMSI is 338088000. Call sign WDH4108. IMO 9415715.
How big is Barthel Tide?
Barthel Tide is about 66.2 m long, 14 m on the beam, drawing 5.2 m.
Is Barthel Tide on the Master's Mate Safety Initiative Network?
Not yet. If Barthel Tide is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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