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.
Recreational
Relentless
MMSI 368053520 · Call sign WDK4267
Not yet on Master's MateType
Recreational
Flag
USALength
20.8 m
Beam
5.7 m
Draft
3 m
Call sign
WDK4267
Official No.
1287239
Hull ID
VKY68002B818
AIS reports
1
Registered in the United States, Relentless is a 20.8-metre pleasure craft. Relentless has 5.7 metres in the beam and a 3 m draft. Officially she's MMSI 368053520, call sign WDK4267. Join Relentless to the Master's Mate Safety Initiative Network — free, and built by cruisers for cruisers.
Free forever · No credit card · for recreational captains
Keep Relentless looked after — even when you’re not aboard.
Anchor alarms that wake you, a live camera at the dock, and weather you can trust before every run.
Look after her — claim free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Relentless 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 recreational captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Relentless 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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 Relentless and switch it all on
Free to join · nothing to install to start · cancel anytime
About Relentless
What kind of vessel is Relentless?
Relentless is a Recreational flagged to United States of America.
What is Relentless's MMSI?
Relentless's MMSI is 368053520. Call sign WDK4267.
How big is Relentless?
Relentless is about 20.8 m long, 5.7 m on the beam, drawing 3 m.
Is Relentless on the Master's Mate Safety Initiative Network?
Not yet. If Relentless 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.