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.
Cargo
JNS RIVER
MMSI 477019500 · Call sign VRWI4
Not yet on Master's MateType
Cargo
Flag
HKGLength
179 m
Beam
30 m
Draft
7 m
Call sign
VRWI4
IMO
1045227
First reported
Jun 2026
Last reported
Jun 2026
AIS reports
8
JNS RIVER, a cargo vessel wearing Hong Kong colours, measures 179 metres on deck. She's built with a beam measuring 30 metres and a 7-metre draft. She's listed under MMSI 477019500, call sign VRWI4, IMO 1045227. Claim JNS RIVER free on the Master's Mate Safety Initiative Network and let nearby cruisers have her back.
Free forever · No credit card · for commercial operators
Eyes on JNS RIVER, around the clock.
Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.
Put her on the dashboard — free →Takes 60 seconds · Your data stays yours · Built by cruisers, for cruisers
Wherever JNS RIVER 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 commercial operators
The most powerful cruising platform ever built — yours, free.
Joining the Safety Initiative Network doesn't just put JNS RIVER 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.
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.
Worldwide Charts
Navionics-grade vector charts, satellite & raster overlays, online or off. Your whole cruising ground.
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.
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 JNS RIVER and switch it all on
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About JNS RIVER
What kind of vessel is JNS RIVER?
JNS RIVER is a Cargo flagged to Hong Kong S.A.R..
What is JNS RIVER's MMSI?
JNS RIVER's MMSI is 477019500. Call sign VRWI4. IMO 1045227.
How big is JNS RIVER?
JNS RIVER is about 179 m long, 30 m on the beam, drawing 7 m.
Is JNS RIVER on the Master's Mate Safety Initiative Network?
Not yet. If JNS RIVER is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).
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