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)
Harbor Queen
MMSI 367467190 · Call sign WDF5786
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
22.8 m
Beam
8.9 m
Draft
3.1 m
Call sign
WDF5786
Official No.
1168150
AIS reports
1
Harbor Queen is an American 22.8-metre ferry. She's built with a 8.9 m beam and a 3.1-metre draft. Find her under MMSI 367467190, call sign WDF5786. Harbor Queen 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 Harbor Queen 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 Harbor Queen 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 Harbor Queen 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 Harbor Queen and switch it all on
Free to join · nothing to install to start · cancel anytime
About Harbor Queen
What kind of vessel is Harbor Queen?
Harbor Queen is a Passenger (Inspected) flagged to United States of America.
What is Harbor Queen's MMSI?
Harbor Queen's MMSI is 367467190. Call sign WDF5786.
How big is Harbor Queen?
Harbor Queen is about 22.8 m long, 8.9 m on the beam, drawing 3.1 m.
Is Harbor Queen on the Master's Mate Safety Initiative Network?
Not yet. If Harbor Queen is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
© 2026 Master’s Mate. All rights reserved.