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.
Passenger
HARPIA
MMSI 710030930 · Call sign PQ8531
Not yet on Master's MateType
Passenger
Flag
BRALength
44 m
Beam
13 m
Draft
1.4 m
Call sign
PQ8531
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
On the Brazilian registry, HARPIA is a 44-metre passenger craft. She has a beam measuring 13 metres and a draft measuring 1.4 metres. Her papers read MMSI 710030930, call sign PQ8531. Keep every soul aboard HARPIA covered with the free Master's Mate Safety Initiative Network.
Free forever · No credit card · for passenger & charter operators
Keep every soul aboard HARPIA safe.
Distress alerting, live AIS, onboard monitoring and weather routing — the safety stack for boats that carry people.
Switch on the safety stack — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Live AIS position · Jun 9, 2026 05:05 UTC
Position
22.8943° S, 43.1250° W
Status
Under way (engine)
Speed
0.0 kn
Course
264°
Destination
CHARITAS
ETA
07-07 14:40 UTC
Wherever HARPIA 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 passenger & charter operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put HARPIA on the map. It hands you the full bridge:
Distress Mesh
Mayday & Pan-Pan that ripple out to nearby cruisers — a watch network that has your back.
Live AIS & Traffic
See every vessel around you in real time. Closest-approach warnings before they matter.
Systems Monitoring
Batteries, bilge, tanks, Victron & NMEA 2000 telemetry — your whole boat on one dashboard.
Weather & Routing
GRIB wind, swell & current on the chart. Plan passages with ETA-calibrated forecasts per leg.
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 HARPIA and switch it all on
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About HARPIA
What kind of vessel is HARPIA?
HARPIA is a Passenger flagged to Brazil.
Where was HARPIA last seen?
HARPIA was last reported in around 23°S 43°W in Jun 2026 on public AIS.
What is HARPIA's MMSI?
HARPIA's MMSI is 710030930. Call sign PQ8531.
How big is HARPIA?
HARPIA is about 44 m long, 13 m on the beam, drawing 1.4 m.
Is HARPIA on the Master's Mate Safety Initiative Network?
Not yet. If HARPIA is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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