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
Back Nine
MMSI 368360330 · Call sign WDP5088
Not yet on Master's MateType
Recreational
Flag
USALength
12.3 m
Beam
3.7 m
Draft
2.1 m
Call sign
WDP5088
Official No.
1318154
Hull ID
IVBC0189J021
AIS reports
1
Back Nine is a recreational boat hailing from the United States, 12.3 metres overall. Back Nine has a 3.7-metre beam and a 2.1-metre draft. Find her under MMSI 368360330, call sign WDP5088. Back Nine can join the Master's Mate Safety Initiative Network for free: think of it as a watch network that has every boat's back.
Free forever · No credit card · for recreational captains
Keep Back Nine 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 Back Nine 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 Back Nine 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 Back Nine and switch it all on
Free to join · nothing to install to start · cancel anytime
About Back Nine
What kind of vessel is Back Nine?
Back Nine is a Recreational flagged to United States of America.
What is Back Nine's MMSI?
Back Nine's MMSI is 368360330. Call sign WDP5088.
How big is Back Nine?
Back Nine is about 12.3 m long, 3.7 m on the beam, drawing 2.1 m.
Is Back Nine on the Master's Mate Safety Initiative Network?
Not yet. If Back Nine is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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