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)
Ms. Monica
MMSI 366856280 · Call sign WDA8621
Not yet on Master's MateType
Passenger (Inspected)
Flag
USALength
40.8 m
Beam
8.2 m
Draft
3.6 m
Call sign
WDA8621
IMO
8981365
Official No.
1127417
AIS reports
1
Ms. Monica, a passenger ship under American registration, measures 40.8 metres on deck. She has a 8.2-metre beam and a draft measuring 3.6 metres. She's on record as MMSI 366856280, call sign WDA8621, IMO 8981365. Keep every soul aboard Ms. Monica covered with the free Master's Mate Safety Initiative Network.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard Ms. Monica 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 Ms. Monica 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 Ms. Monica 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 Ms. Monica and switch it all on
Free to join · nothing to install to start · cancel anytime
About Ms. Monica
What kind of vessel is Ms. Monica?
Ms. Monica is a Passenger (Inspected) flagged to United States of America.
What is Ms. Monica's MMSI?
Ms. Monica's MMSI is 366856280. Call sign WDA8621. IMO 8981365.
How big is Ms. Monica?
Ms. Monica is about 40.8 m long, 8.2 m on the beam, drawing 3.6 m.
Is Ms. Monica on the Master's Mate Safety Initiative Network?
Not yet. If Ms. Monica 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.