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.
Commercial Fishing Vessel
Tremor
MMSI 368320350 · Call sign WDN8725
Not yet on Master's MateType
Commercial Fishing Vessel
Flag
USALength
9.8 m
Beam
4.6 m
Draft
2.1 m
Call sign
WDN8725
Official No.
1337150
AIS reports
1
Tremor is an American commercial fishing vessel — 9.8 metres overall. She's built with a beam of 4.6 m and a 2.1 m draft. Look for MMSI 368320350, call sign WDN8725. Tremor belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
Free forever · No credit card · for working captains
Know where the fleet is. Get Tremor home safe.
Live AIS traffic, weather you can plan around, engine & systems telemetry, and a distress mesh that reaches nearby boats.
Keep the fleet in sight — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever Tremor 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 captains
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put Tremor on the map. It hands you the full bridge:
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.
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.
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 Tremor and switch it all on
Free to join · nothing to install to start · cancel anytime
About Tremor
What kind of vessel is Tremor?
Tremor is a Commercial Fishing Vessel flagged to United States of America.
What is Tremor's MMSI?
Tremor's MMSI is 368320350. Call sign WDN8725.
How big is Tremor?
Tremor is about 9.8 m long, 4.6 m on the beam, drawing 2.1 m.
Is Tremor on the Master's Mate Safety Initiative Network?
Not yet. If Tremor 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.