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.
Research Vessel
Island C
MMSI 368037230 · Call sign WDK2616
Not yet on Master's MateType
Research Vessel
Flag
USALength
21.7 m
Beam
6.5 m
Draft
3.7 m
Call sign
WDK2616
IMO
7230771
Official No.
536789
AIS reports
1
Out of the United States, Island C is a 21.7-metre boat. She's built with a 6.5 m beam and a 3.7 m draft. On AIS she appears as MMSI 368037230, call sign WDK2616, IMO 7230771. Island C is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card
Is Island C your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Island C 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Island C on the map. It hands you the full bridge:
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.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Hail Any Captain
A verified captains directory + direct hailing. Reach the boat next to you, or across the bay.
Claim Island C and switch it all on
Free to join · nothing to install to start · cancel anytime
About Island C
What kind of vessel is Island C?
Island C is a Research Vessel flagged to United States of America.
What is Island C's MMSI?
Island C's MMSI is 368037230. Call sign WDK2616. IMO 7230771.
How big is Island C?
Island C is about 21.7 m long, 6.5 m on the beam, drawing 3.7 m.
Is Island C on the Master's Mate Safety Initiative Network?
Not yet. If Island C 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.