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.
Law Enforcement
REEF RANGER
MMSI 503010610 · Call sign 31864QB
Not yet on Master's MateType
Law Enforcement
Flag
AUSLength
24 m
Beam
8 m
Draft
1.5 m
Call sign
31864QB
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
85
REEF RANGER flies the Australian flag — a 24-metre vessel. Her hull carries a 8 m beam and a draft measuring 1.5 metres. Officially she's MMSI 503010610, call sign 31864QB. REEF RANGER belongs on the Master's Mate Safety Initiative Network, a free safety net shared by boats the world over.
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Live AIS position · Jun 9, 2026 18:42 UTC
Position
16.9519° S, 145.7733° E
Status
At anchor
Speed
0.0 kn
Course
229°
Destination
LKT
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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 REEF RANGER
What kind of vessel is REEF RANGER?
REEF RANGER is a Law Enforcement flagged to Ashmore and Cartier Islands.
Where was REEF RANGER last seen?
REEF RANGER was last reported in the Great Barrier Reef in Jun 2026 on public AIS.
What is REEF RANGER's MMSI?
REEF RANGER's MMSI is 503010610. Call sign 31864QB.
How big is REEF RANGER?
REEF RANGER is about 24 m long, 8 m on the beam, drawing 1.5 m.
Is REEF RANGER on the Master's Mate Safety Initiative Network?
Not yet. If REEF RANGER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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