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.
Commercial Fishing Vessel
Ester C
MMSI 367445630 · Call sign WDF3920
Not yet on Master's MateType
Commercial Fishing Vessel
Flag
USALength
11 m
Beam
3.7 m
Draft
1.5 m
Call sign
WDF3920
Official No.
1040081
AIS reports
1
Registered in the United States, Ester C is an 11-metre fishing trawler. Below, she has a 3.7-metre beam and a draft of 1.5 m. Look for MMSI 367445630, call sign WDF3920. Working boats like Ester C spend long hours offshore — the free Master's Mate Safety Initiative Network puts a distress mesh and a watching fleet within reach.
Free forever · No credit card · for working captains
Know where the fleet is. Get Ester C home safe.
Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.
Keep the fleet in sight — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Ester C 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 captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Ester C on the map. It hands you the full bridge:
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.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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 Ester C and switch it all on
Free to join · nothing to install to start · cancel anytime
About Ester C
What kind of vessel is Ester C?
Ester C is a Commercial Fishing Vessel flagged to United States of America.
What is Ester C's MMSI?
Ester C's MMSI is 367445630. Call sign WDF3920.
How big is Ester C?
Ester C is about 11 m long, 3.7 m on the beam, drawing 1.5 m.
Is Ester C on the Master's Mate Safety Initiative Network?
Not yet. If Ester C is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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