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.
Tug
CONTENDER
MMSI 367740130 · Call sign WDI8589
Not yet on Master's MateType
Tug
Flag
USALength
23 m
Beam
8 m
Call sign
WDI8589
Official No.
519844
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
43
CONTENDER is an American tug, spanning 23 metres. She has a beam of 8 m. On AIS she appears as MMSI 367740130, call sign WDI8589. CONTENDER is invited to the free Master's Mate Safety Initiative Network, where cruisers keep each other safe.
Free forever · No credit card · for working boats
Built for boats that work — like CONTENDER.
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
Last known position · Jun 3, 2026
Position
32.6946° N, 117.1518° W
Working off Southern California? 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 CONTENDER 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 CONTENDER and switch it all on
Free to join · nothing to install to start · cancel anytime
About CONTENDER
What kind of vessel is CONTENDER?
CONTENDER is a Tug flagged to United States of America.
Where was CONTENDER last seen?
CONTENDER was last reported in off Southern California in Jun 2026 on public AIS.
What is CONTENDER's MMSI?
CONTENDER's MMSI is 367740130. Call sign WDI8589.
How big is CONTENDER?
CONTENDER is about 23 m long, 8 m on the beam.
Is CONTENDER on the Master's Mate Safety Initiative Network?
Not yet. If CONTENDER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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