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KOYU MARU — Cargo · IMO 9712242

JPUnder way using engine
World map showing the last known position of KOYU MARU at 33° 56.758' N, 133° 6.331' E
NSEW
Current PositionLive

KOYU MARU is currently under way in the Sea of Japan, at 33.9460° N, 133.1055° E, making 1.2 knots on a course of 25°. It is sailing from SAKAI to NYUGAWA ANCH with an ETA of 7 Sep 2026, 19:41 UTC. AIS position received 8 Sep 2026, 17:38 UTC.

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Updated 2 hours ago using terrestrial data
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Under way using engine
Current Navigational Status
1.2 kn
Speed
25.0°
/ 208°
Course / Heading
3 m
Static Draught
3 m
Current Draught

Voyage Tracker

Japan flag
SAKAIJPSAK
ATD
08:24 UTCSep 7, 2026
ETA
19:41 UTCSep 7, 2026
KOYU MARU

KOYU MARU

Identity

Cargo
Type
Japan flagJP
Flag
9712242
IMO Number
431005964
MMSI
JD3785
Call Sign

Specifications

62 m × 10 m
Length × Breadth
2014-01-01
Year Built
820 t
Deadweight
247 t
Gross Tonnage
N/A
Engine Power
TAIYO SHIPBUILDING - SANYO-ONODA, JAPAN
Builder
N/A
Class Society
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Dive into the fleet, port, and flag state that KOYU 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 SAKAI
Port traffic, arrivals and live vessel positions for SAKAI (JPSAK).
Destination Port
Port of NYUGAWA ANCH
Arrivals, berth specifications, and live vessel traffic for NYUGAWA ANCH (JPIMB).

About KOYU MARU

Identity · Ownership · Class · Route

KOYU MARU — Cargo

Built in 2014, with a gross tonnage of 247 GT, and a dead weight of 820 tonnes, KOYU MARU is a cargo registered under the Japan flag. The vessel is built by TAIYO SHIPBUILDING - SANYO-ONODA, JAPAN.

KOYU MARU route and voyage history

KOYU MARU is currently on a voyage from SAKAI to NYUGAWA ANCH with an estimated arrival on 2026-09-07T19:41:00Z. The live route and current course of KOYU 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 KOYU MARU can be seen in the Similar Vessels section above or in the full cargo fleet at /vessel-type/cargo.

  • MMSI: 431005964
  • IMO: 9712242
  • Call sign: JD3785
  • Vessel type: Cargo
  • Flag state: Japan

Frequently Asked Questions

Where is KOYU MARU right now?+
KOYU MARU is currently under way in the Sea of Japan, within the Japan / Korea shipping lane. It is sailing from SAKAI to NYUGAWA ANCH with an ETA of 7 Sep 2026, 19:41 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 KOYU MARU?+
KOYU MARU broadcasts MMSI 431005964 and is registered as IMO 9712242, with call sign JD3785. 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 KOYU MARU?+
KOYU 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 KOYU MARU?+
MarineRadar shows the latest AIS broadcast from KOYU 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 KOYU 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 KOYU MARU?+
As a cargo, KOYU 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. KOYU MARU has a gross tonnage of 247 GT.

KOYU MARU — Key Facts

MMSI
431005964
IMO number
9712242
Call sign
JD3785
Vessel type
Cargo
Flag state
JP
Navigation status
Under way using engine
Current speed
1.2 knots
Course over ground
25.0°
Heading
208°
Last known position
33.9460°, 133.1055°
Destination
NYUGAWA ANCH
ETA
2026-09-07T19:41:00Z
Departure port
SAKAI
Actual time of departure
2026-09-07T08:24:00Z
Current draught
3 m
Maximum static draught
3 m
Year built
2014-01-01
Gross tonnage
247
Dead weight
820 t
AIS last updated
2026-09-08T17:38:00Z