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

RIJYO

MMSI 431013599 · Call sign JD4648

Not yet on Master's Mate

Type

Cargo

Flag

JPN

Length

76 m

Beam

12 m

Draft

3.2 m

Call sign

JD4648

First reported

Jun 2026

Last reported

Jun 2026

AIS reports

RIJYO is a Japanese cargo vessel, 76 metres overall. She carries a beam measuring 12 metres and a 3.2-metre draft. On AIS she shows as MMSI 431013599, call sign JD4648. Give RIJYO the backing of the Master's Mate Safety Initiative Network — free, and a fleet that has her back.

Free forever · No credit card · for commercial operators

Eyes on RIJYO, around the clock.

Real-time AIS, full systems telemetry, distress alerting and worldwide charts — your hull on one dashboard, from anywhere.

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Last known position · Jun 2, 2026

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Position

35.9267° N, 140.6647° E

Transiting the Sea of Japan? You're never out there alone.

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Joining the Safety Initiative Network doesn't just put RIJYO 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 RIJYO and switch it all on

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About RIJYO

What kind of vessel is RIJYO?

RIJYO is a Cargo flagged to Japan.

Where was RIJYO last seen?

RIJYO was last reported in the Sea of Japan in Jun 2026 on public AIS.

What is RIJYO's MMSI?

RIJYO's MMSI is 431013599. Call sign JD4648.

How big is RIJYO?

RIJYO is about 76 m long, 12 m on the beam, drawing 3.2 m.

Is RIJYO on the Master's Mate Safety Initiative Network?

Not yet. If RIJYO is your boat, you can claim it free and join the Master's Mate Safety Initiative Network (MMSIn).