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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.
Unclassified

Northstar Responder

MMSI 366593000 · Call sign WDN5677

Not yet on Master's Mate
Type
Unclassified
Flag
USAUSA
Length
58.1 m
Beam
13.4 m
Draft
5.2 m
Call sign
WDN5677
IMO
9043861
Official No.
983112
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
40

Northstar Responder is a boat flying the flag of the United States, measuring 58.1 metres. Northstar Responder has a beam of 13.4 m and a 5.2 m draft. On AIS she shows as MMSI 366593000, call sign WDN5677, IMO 9043861. Northstar Responder is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.

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Live AIS position · Jun 9, 2026 21:57 UTC
Position
39.8946° N, 75.1970° W
Status
Moored
Speed
0.0 kn
Course
Destination
PHILADELPHIA
ETA
06-04 10:00 UTC
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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.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
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.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
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About Northstar Responder

What kind of vessel is Northstar Responder?
Northstar Responder is a Unclassified flagged to United States of America.
Where was Northstar Responder last seen?
Northstar Responder was last reported in off the U.S. East Coast in Jun 2026 on public AIS.
What is Northstar Responder's MMSI?
Northstar Responder's MMSI is 366593000. Call sign WDN5677. IMO 9043861.
How big is Northstar Responder?
Northstar Responder is about 58.1 m long, 13.4 m on the beam, drawing 5.2 m.
Is Northstar Responder on the Master's Mate Safety Initiative Network?
Not yet. If Northstar Responder is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).

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