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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.
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ACE DEFENDER

MMSI 710400629 · Call sign PV4789

Not yet on Master's Mate
Type
Other
Flag
BRABRA
Length
86 m
Beam
18 m
Draft
5.2 m
Call sign
PV4789
IMO
9741279
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85

ACE DEFENDER, a craft flying the Brazilian flag, measures 86 metres on deck. Below, she has 18 metres in the beam and a draft measuring 5.2 metres. She broadcasts as MMSI 710400629, call sign PV4789, IMO 9741279. Claim ACE DEFENDER free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.

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Live AIS position · Jun 9, 2026 03:38 UTC
Position
22.8566° S, 43.1807° W
Status
At anchor
Speed
0.0 kn
Course
Destination
RIO DE JANEIRO
ETA
02-26 14:00 UTC
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Joining the Safety Initiative Network doesn't just put ACE DEFENDER 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.
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About ACE DEFENDER

What kind of vessel is ACE DEFENDER?
ACE DEFENDER is a Other flagged to Brazil.
Where was ACE DEFENDER last seen?
ACE DEFENDER was last reported in around 23°S 43°W in Jun 2026 on public AIS.
What is ACE DEFENDER's MMSI?
ACE DEFENDER's MMSI is 710400629. Call sign PV4789. IMO 9741279.
How big is ACE DEFENDER?
ACE DEFENDER is about 86 m long, 18 m on the beam, drawing 5.2 m.
Is ACE DEFENDER on the Master's Mate Safety Initiative Network?
Not yet. If ACE DEFENDER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).

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