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
BERTHA D
MMSI 367111870 · Call sign WDD2172
Not yet on Master's MateType
Offshore Supply Vessel
Flag
USALength
46.7 m
Beam
11 m
Draft
3.7 m
Call sign
WDD2172
IMO
9399442
Official No.
1180724
AIS reports
1
BERTHA D is a working craft flying the flag of the United States, 46.7 metres LOA. Below, she has a 11-metre beam and a draft of 3.7 m. Find her under MMSI 367111870, call sign WDD2172, IMO 9399442. Bring BERTHA D aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for working boats
Built for boats that work — like BERTHA D.
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 BERTHA D 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 BERTHA D 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 BERTHA D and switch it all on
Free to join · nothing to install to start · cancel anytime
About BERTHA D
What kind of vessel is BERTHA D?
BERTHA D is a Offshore Supply Vessel flagged to United States of America.
What is BERTHA D's MMSI?
BERTHA D's MMSI is 367111870. Call sign WDD2172. IMO 9399442.
How big is BERTHA D?
BERTHA D is about 46.7 m long, 11 m on the beam, drawing 3.7 m.
Is BERTHA D on the Master's Mate Safety Initiative Network?
Not yet. If BERTHA D is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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