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.
Towing Vessel
KOKUA
MMSI 367034950 · Call sign WBR3137
Not yet on Master's MateType
Towing Vessel
Flag
USALength
38.1 m
Beam
9.6 m
Draft
5 m
Call sign
WBR3137
IMO
6516934
Official No.
298224
AIS reports
1
An American harbour workboat, KOKUA measures 38.1 metres. Below, she has a 9.6 m beam and a draft of 5 m. She broadcasts as MMSI 367034950, call sign WBR3137, IMO 6516934. KOKUA is welcome on the Master's Mate Safety Initiative Network — a free, community-run watch where boats look out for one another.
Free forever · No credit card · for working boats
Built for boats that work — like KOKUA.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever KOKUA 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put KOKUA on the map. It hands you the full bridge:
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 KOKUA and switch it all on
Free to join · nothing to install to start · cancel anytime
About KOKUA
What kind of vessel is KOKUA?
KOKUA is a Towing Vessel flagged to United States of America.
What is KOKUA's MMSI?
KOKUA's MMSI is 367034950. Call sign WBR3137. IMO 6516934.
How big is KOKUA?
KOKUA is about 38.1 m long, 9.6 m on the beam, drawing 5 m.
Is KOKUA on the Master's Mate Safety Initiative Network?
Not yet. If KOKUA 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.