MarineRadar — Home
HubNews & TrendsForumVesselLighthousePort
Sign inDownload
Google PlayApp Store
Download
✕
HubNews & TrendsForumVesselLighthousePort
Sign in
Japan flag

KOYO MARU — Cargo · IMO 9774733

JPMoored
World map showing the last known position of KOYO MARU at 34° 32.513' N, 138° 28.609' E
NSEW
Current PositionLive

KOYO MARU is currently moored in the Sea of Japan, at 34.5419° N, 138.4768° E. It is sailing from CHIBA to FUKUYAMA with an ETA of 10 Sep 2026, 02:00 UTC. AIS position received 8 Sep 2026, 17:19 UTC.

Show in Map
Updated 28 minutes ago using terrestrial data
Live Satellite · latest position

See where KOYO MARU is now

This fix came from a shore antenna, and those stop at the coast. Use a satellite credit to track this vessel in the deep sea.

$0.99 for 1 satellite position

Get satellite position · $0.99Save up to 60% with credit packs →
Moored
Current Navigational Status
12.3 kn
Speed
273.0°
/ 272°
Course / Heading
5 m
Static Draught
5 m
Current Draught

Voyage Tracker

Japan flag
CHIBAJPCHB
ATD
04:38 UTCSep 6, 2026
ETA
02:00 UTCSep 10, 2026
KOYO MARU

KOYO MARU

Identity

Cargo
Type
Japan flagJP
Flag
9774733
IMO Number
431006813
MMSI
JD3908
Call Sign

Specifications

99 m × 16 m
Length × Breadth
N/A
Year Built
N/A
Deadweight
N/A
Gross Tonnage
N/A
Engine Power
N/A
Builder
N/A
Class Society
Live tracking · 50,000+ mariners

Track KOYO MARU live on MarineRadar

Real-time AIS positions, voyage history, and arrival alerts for KOYO MARU — straight from your phone.

Live AIS positionsVoyage historyArrival alerts
Get the App

4.6 ★ · 18,000 reviews

Similar Vessels

Nearby vessels of the same type

Cargo

MSC JULIA R.

Cargo

Cargo

ECUADOR L

Cargo

Cargo

KHADIJAH 01

Cargo

Dive into the fleet, port, and flag state that KOYO MARU is part of.

Flag State
All JP-flagged vessels
Browse every ship currently registered under the JP flag, with live AIS positions.
Vessel Type
Browse all Cargos
See the global fleet of cargos tracked on MarineRadar with live AIS data.
Departure Port
Port of CHIBA
Port traffic, arrivals and live vessel positions for CHIBA (JPCHB).
Destination Port
Port of FUKUYAMA
Arrivals, berth specifications, and live vessel traffic for FUKUYAMA (JPFKY).

About KOYO MARU

Identity · Ownership · Class · Route

KOYO MARU — Cargo

KOYO MARU is a cargo registered under the Japan flag.

KOYO MARU route and voyage history

KOYO MARU is currently on a voyage from CHIBA to FUKUYAMA with an estimated arrival on 2026-09-10T02:00:00Z. The live route and current course of KOYO MARU are shown on the bridge map above, updated whenever the vessel is in range of a coastal AIS receiver or a satellite pass.

Vessel class and identifiers

Vessels in the same class as KOYO MARU can be seen in the Similar Vessels section above or in the full cargo fleet at /vessel-type/cargo.

  • MMSI: 431006813
  • IMO: 9774733
  • Call sign: JD3908
  • Vessel type: Cargo
  • Flag state: Japan

Frequently Asked Questions

Where is KOYO MARU right now?+
KOYO MARU is currently moored in the Sea of Japan, within the Japan / Korea shipping lane. It is sailing from CHIBA to FUKUYAMA with an ETA of 10 Sep 2026, 02:00 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.
What are the identifiers for KOYO MARU?+
KOYO MARU broadcasts MMSI 431006813 and is registered as IMO 9774733, with call sign JD3908. The MMSI is the radio identifier used by AIS; the IMO number stays with the ship for life and does not change with re-flagging or sale.
What type of ship is KOYO MARU?+
KOYO MARU is classified as a cargo vessel registered under the JP flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full cargo fleet at /vessel-type/cargo and full JP flag list at /flag/jp.
How can I see the live position of KOYO MARU?+
MarineRadar shows the latest AIS broadcast from KOYO MARU above, with current position, course, speed, and navigation status. Tap "View on map" to centre the live tracker on the vessel and watch its movement update in real time. The same data is available offline-friendly in the iOS and Android apps.
How often is KOYO MARU's position updated?+
AIS transponders broadcast position every 2 seconds when underway at high speed and up to every 3 minutes at anchor. The position you see refreshes whenever the ship is in range of a coastal AIS receiver or a satellite pass — typically seconds in coastal waters and minutes offshore.
What class is KOYO MARU?+
As a cargo, KOYO MARU sits in the same design class as the other cargos listed in the Similar Vessels section of the vessel page, or in the full cargo directory at /vessel-type/cargo.

KOYO MARU — Key Facts

MMSI
431006813
IMO number
9774733
Call sign
JD3908
Vessel type
Cargo
Flag state
JP
Navigation status
Moored
Current speed
12.3 knots
Course over ground
273.0°
Heading
272°
Last known position
34.5419°, 138.4768°
Destination
FUKUYAMA
ETA
2026-09-10T02:00:00Z
Departure port
CHIBA
Actual time of departure
2026-09-06T04:38:00Z
Current draught
5 m
Maximum static draught
5 m
Dead weight
0 t
AIS last updated
2026-09-08T17:19:00Z