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)
HEIRBORNE
MMSI 368040220 · Call sign WDK2924
Not yet on Master's MateType
Passenger (Uninspected)
Flag
USALength
12.8 m
Beam
4.4 m
Draft
2.3 m
Call sign
WDK2924
Official No.
1126856
Hull ID
HUN42195K102
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
86
HEIRBORNE, a ferry vessel flagged in the United States, measures 12.8 metres on deck. She has a 4.4 m beam and a draft of 2.3 m. Officially she's MMSI 368040220, call sign WDK2924. HEIRBORNE can be part of the Master's Mate Safety Initiative Network at no cost — a community watch that never sleeps.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard HEIRBORNE 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
Live AIS position · Jun 9, 2026 11:58 UTC
Position
37.0200° N, 76.3431° W
Status
Under way (engine)
Speed
0.1 kn
Course
360°
Sailing Chesapeake Bay? You're never out there alone.
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Joining the Safety Initiative Network doesn't just put HEIRBORNE 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 HEIRBORNE and switch it all on
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About HEIRBORNE
What kind of vessel is HEIRBORNE?
HEIRBORNE is a Passenger (Uninspected) flagged to United States of America.
Where was HEIRBORNE last seen?
HEIRBORNE was last reported in Chesapeake Bay in Jun 2026 on public AIS.
What is HEIRBORNE's MMSI?
HEIRBORNE's MMSI is 368040220. Call sign WDK2924.
How big is HEIRBORNE?
HEIRBORNE is about 12.8 m long, 4.4 m on the beam, drawing 2.3 m.
Is HEIRBORNE on the Master's Mate Safety Initiative Network?
Not yet. If HEIRBORNE is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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