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.
Towing Vessel
Crosby Sun
MMSI 366802880 · Call sign WDA3843
Not yet on Master's MateType
Towing Vessel
Flag
USALength
25.8 m
Beam
7.9 m
Draft
3.3 m
Call sign
WDA3843
IMO
8923399
Official No.
644005
AIS reports
1
Crosby Sun is an American workboat — 25.8 metres overall. She's built with a 7.9 m beam and a 3.3 m draft. She's listed under MMSI 366802880, call sign WDA3843, IMO 8923399. Add Crosby Sun to the Master's Mate Safety Initiative Network — free to join, and the fleet keeps an eye out for each other.
Free forever · No credit card · for working boats
Built for boats that work — like Crosby Sun.
Engine & systems telemetry, live AIS, weather and distress alerting for the vessels that earn their keep.
Rig her out — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Crosby Sun 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 working boats
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Crosby Sun on the map. It hands you the full bridge:
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.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
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 Crosby Sun and switch it all on
Free to join · nothing to install to start · cancel anytime
About Crosby Sun
What kind of vessel is Crosby Sun?
Crosby Sun is a Towing Vessel flagged to United States of America.
What is Crosby Sun's MMSI?
Crosby Sun's MMSI is 366802880. Call sign WDA3843. IMO 8923399.
How big is Crosby Sun?
Crosby Sun is about 25.8 m long, 7.9 m on the beam, drawing 3.3 m.
Is Crosby Sun on the Master's Mate Safety Initiative Network?
Not yet. If Crosby Sun 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.