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)
No Ka Oi
MMSI 366922720 · Call sign WDH9383
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
12 m
Beam
3 m
Draft
1.9 m
Call sign
WDH9383
Official No.
1154515
Hull ID
EGO00334F303
AIS reports
2
No Ka Oi is a ferry under the American flag, 12 metres overall. She's built with a beam measuring 3 metres and a 1.9-metre draft. On AIS she shows as MMSI 366922720, call sign WDH9383. Put No Ka Oi on the Master's Mate Safety Initiative Network — free to claim, with a whole fleet watching out for her.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard No Ka Oi 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 No Ka Oi 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 No Ka Oi 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 No Ka Oi and switch it all on
Free to join · nothing to install to start · cancel anytime
About No Ka Oi
What kind of vessel is No Ka Oi?
No Ka Oi is a Passenger (Inspected) flagged to United States of America.
What is No Ka Oi's MMSI?
No Ka Oi's MMSI is 366922720. Call sign WDH9383.
How big is No Ka Oi?
No Ka Oi is about 12 m long, 3 m on the beam, drawing 1.9 m.
Is No Ka Oi on the Master's Mate Safety Initiative Network?
Not yet. If No Ka Oi is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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