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 (Uninspected)
PORPUS
MMSI 367533370 · Call sign WDG4138
Not yet on Master's MateType
Passenger (Uninspected)
Flag
USALength
7.9 m
Beam
2.9 m
Draft
1.5 m
Call sign
WDG4138
Official No.
959621
Hull ID
GMW26006K990
AIS reports
1
PORPUS is an American passenger boat, measuring 7.9 metres. She carries a beam measuring 2.9 metres and a 1.5 m draft. Officially she's MMSI 367533370, call sign WDG4138. Sign PORPUS up free to the Master's Mate Safety Initiative Network and join a fleet that looks after its own.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard PORPUS 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 PORPUS 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 PORPUS 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 PORPUS and switch it all on
Free to join · nothing to install to start · cancel anytime
About PORPUS
What kind of vessel is PORPUS?
PORPUS is a Passenger (Uninspected) flagged to United States of America.
What is PORPUS's MMSI?
PORPUS's MMSI is 367533370. Call sign WDG4138.
How big is PORPUS?
PORPUS is about 7.9 m long, 2.9 m on the beam, drawing 1.5 m.
Is PORPUS on the Master's Mate Safety Initiative Network?
Not yet. If PORPUS is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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