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
HOLLY B IV
MMSI 366714830 · Call sign WCW4093
Not yet on Master's MateType
Recreational
Flag
USALength
10.5 m
Beam
3.6 m
Draft
1.6 m
Call sign
WCW4093
Official No.
966769
Hull ID
CTYP1096E090
AIS reports
1
HOLLY B IV, an American leisure boat, measures 10.5 metres on deck. She's built with a 3.6-metre beam and a 1.6 m draft. Her papers read MMSI 366714830, call sign WCW4093. There's a place for HOLLY B IV on the Master's Mate Safety Initiative Network — free, community-driven, like AAA for the ocean.
Free forever · No credit card · for recreational captains
Keep HOLLY B IV 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 HOLLY B IV 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 HOLLY B IV 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 HOLLY B IV and switch it all on
Free to join · nothing to install to start · cancel anytime
About HOLLY B IV
What kind of vessel is HOLLY B IV?
HOLLY B IV is a Recreational flagged to United States of America.
What is HOLLY B IV's MMSI?
HOLLY B IV's MMSI is 366714830. Call sign WCW4093.
How big is HOLLY B IV?
HOLLY B IV is about 10.5 m long, 3.6 m on the beam, drawing 1.6 m.
Is HOLLY B IV on the Master's Mate Safety Initiative Network?
Not yet. If HOLLY B IV is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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