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.
Passenger (Inspected)
4Puppies
MMSI 303264000 · Call sign WDK7941
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
17.1 m
Beam
4.9 m
Draft
1.4 m
Call sign
WDK7941
Official No.
991186
Hull ID
AYH56005G393
AIS reports
3
4Puppies is an American passenger vessel — 17.1 metres overall. She carries a beam of 4.9 m and a 1.4 m draft. Her papers read MMSI 303264000, call sign WDK7941. 4Puppies carries passengers; the free Master's Mate Safety Initiative Network helps carry the watch, with distress alerting and a network nearby.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard 4Puppies safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever 4Puppies 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put 4Puppies on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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.
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.
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 4Puppies and switch it all on
Free to join · nothing to install to start · cancel anytime
About 4Puppies
What kind of vessel is 4Puppies?
4Puppies is a Passenger (Inspected) flagged to United States of America.
What is 4Puppies's MMSI?
4Puppies's MMSI is 303264000. Call sign WDK7941.
How big is 4Puppies?
4Puppies is about 17.1 m long, 4.9 m on the beam, drawing 1.4 m.
Is 4Puppies on the Master's Mate Safety Initiative Network?
Not yet. If 4Puppies is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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