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.
Research Vessel
R/V Westerly
MMSI 367489490 · Call sign WDF7918
Not yet on Master's MateType
Research Vessel
Flag
USALength
11.6 m
Beam
5 m
Draft
1.4 m
Call sign
WDF7918
Official No.
1231991
Hull ID
IAR38CATK011
AIS reports
1
On the American registry, R/V Westerly is an 11.6-metre craft. R/V Westerly has a beam of 5 m and a 1.4-metre draft. Her registration reads MMSI 367489490, call sign WDF7918. The Master's Mate Safety Initiative Network welcomes R/V Westerly — free to join, cruiser-run, and always on watch.
Free forever · No credit card
Is R/V Westerly your boat?
Your free claim unlocks the most powerful cruising platform ever built — anchor watch, worldwide charts, live AIS, weather routing, and a network of cruisers watching each other’s backs.
Claim this boat — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever R/V Westerly 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
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put R/V Westerly 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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
Onboard Cameras
Watch your boat from anywhere — live feeds and 24h recording, straight from your gateway.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
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 R/V Westerly and switch it all on
Free to join · nothing to install to start · cancel anytime
About R/V Westerly
What kind of vessel is R/V Westerly?
R/V Westerly is a Research Vessel flagged to United States of America.
What is R/V Westerly's MMSI?
R/V Westerly's MMSI is 367489490. Call sign WDF7918.
How big is R/V Westerly?
R/V Westerly is about 11.6 m long, 5 m on the beam, drawing 1.4 m.
Is R/V Westerly on the Master's Mate Safety Initiative Network?
Not yet. If R/V Westerly 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.