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)
Night Heron
MMSI 367545420 · Call sign WDG5317
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
15.2 m
Beam
4.3 m
Draft
0.9 m
Call sign
WDG5317
Official No.
1066910
Hull ID
SUALR007D898
AIS reports
1
Night Heron is a ferry vessel listed on the the United States registry, 15.2 metres LOA. She has a beam measuring 4.3 metres and a draft of 0.9 m. Officially she's MMSI 367545420, call sign WDG5317. Keep every soul aboard Night Heron covered with the free Master's Mate Safety Initiative Network.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Night Heron 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 Night Heron 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 Night Heron 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 Night Heron and switch it all on
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About Night Heron
What kind of vessel is Night Heron?
Night Heron is a Passenger (Inspected) flagged to United States of America.
What is Night Heron's MMSI?
Night Heron's MMSI is 367545420. Call sign WDG5317.
How big is Night Heron?
Night Heron is about 15.2 m long, 4.3 m on the beam, drawing 0.9 m.
Is Night Heron on the Master's Mate Safety Initiative Network?
Not yet. If Night Heron is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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