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.
Passenger (Inspected)
Topnotch
MMSI 368320610 · Call sign WDN8750
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
14.9 m
Beam
4.5 m
Draft
0.6 m
Call sign
WDN8750
Official No.
1337175
Hull ID
EOUDC008E323
AIS reports
1
Topnotch is a passenger ferry registered in the United States, 14.9 metres long. Her hull carries a beam of 4.5 m and a draft of 0.6 m. She's on record as MMSI 368320610, call sign WDN8750. Bring Topnotch aboard the Master's Mate Safety Initiative Network — free, and every captain on it has the others' backs.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Topnotch safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Topnotch 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Topnotch on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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 Topnotch and switch it all on
Free to join · nothing to install to start · cancel anytime
About Topnotch
What kind of vessel is Topnotch?
Topnotch is a Passenger (Inspected) flagged to United States of America.
What is Topnotch's MMSI?
Topnotch's MMSI is 368320610. Call sign WDN8750.
How big is Topnotch?
Topnotch is about 14.9 m long, 4.5 m on the beam, drawing 0.6 m.
Is Topnotch on the Master's Mate Safety Initiative Network?
Not yet. If Topnotch is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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