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.
Industrial Vessel
Responder
MMSI 368300890 · Call sign WDN6625
Not yet on Master's MateType
Industrial Vessel
Flag
USALength
10.8 m
Beam
3.6 m
Draft
1.3 m
Call sign
WDN6625
Official No.
1138187
Hull ID
AUC2913BF202
AIS reports
1
On the American registry, Responder is a 10.8-metre merchant vessel. She has 3.6 metres in the beam and a draft of 1.3 m. Officially she's MMSI 368300890, call sign WDN6625. Put Responder on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for commercial operators
Eyes on Responder, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Responder 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Responder 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.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Anchor Watch
GPS-precise drag alarms that actually wake you — and your whole crew. Sleep through the night.
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 Responder and switch it all on
Free to join · nothing to install to start · cancel anytime
About Responder
What kind of vessel is Responder?
Responder is a Industrial Vessel flagged to United States of America.
What is Responder's MMSI?
Responder's MMSI is 368300890. Call sign WDN6625.
How big is Responder?
Responder is about 10.8 m long, 3.6 m on the beam, drawing 1.3 m.
Is Responder on the Master's Mate Safety Initiative Network?
Not yet. If Responder is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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