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Japan flag

SEIJU MARU — Cargo · IMO 9900538

JPUnder way using engine
World map showing the last known position of SEIJU MARU at 34° 15.448' N, 133° 28.729' E
NSEW
Current PositionLive

SEIJU MARU is currently under way in the Sea of Japan, at 34.2575° N, 133.4788° E, making 11.3 knots on a course of 73°. It is sailing from UBE to OSAKA with an ETA of 7 Sep 2026, 09:25 UTC. AIS position received 8 Sep 2026, 17:50 UTC.

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Updated 7 minutes ago using terrestrial data
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Under way using engine
Current Navigational Status
11.3 kn
Speed
73.0°
/ 71°
Course / Heading
3.6 m
Static Draught
3.7 m
Current Draught

Voyage Tracker

Japan flag
UBEJPUBJ
ATD
06:29 UTCSep 8, 2026
Japan flag
OSAKAJPOSA
ETA
09:25 UTCSep 7, 2026
SEIJU MARU

SEIJU MARU

Identity

Cargo
Type
Japan flagJP
Flag
9900538
IMO Number
431015322
MMSI
JD4847
Call Sign

Specifications

76 m × 12 m
Length × Breadth
2020-01-01
Year Built
1,730 t
Deadweight
499 t
Gross Tonnage
1,200 kW
Engine Power
N/A
Builder
N/A
Class Society
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Dive into the fleet, port, and flag state that SEIJU 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 UBE
Port traffic, arrivals and live vessel positions for UBE (JPUBJ).
Destination Port
Port of OSAKA
Arrivals, berth specifications, and live vessel traffic for OSAKA (JPOSA).

About SEIJU MARU

Identity · Ownership · Class · Route

SEIJU MARU — Cargo

Built in 2020, with a gross tonnage of 499 GT, and a dead weight of 1,730 tonnes, SEIJU MARU is a cargo registered under the Japan flag.

SEIJU MARU route and voyage history

SEIJU MARU is currently on a voyage from UBE to OSAKA with an estimated arrival on 2026-09-07T09:25:00Z. The live route and current course of SEIJU 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 SEIJU MARU can be seen in the Similar Vessels section above or in the full cargo fleet at /vessel-type/cargo.

  • MMSI: 431015322
  • IMO: 9900538
  • Call sign: JD4847
  • Vessel type: Cargo
  • Flag state: Japan

Frequently Asked Questions

Where is SEIJU MARU right now?+
SEIJU MARU is currently under way in the Sea of Japan, within the Japan / Korea shipping lane. It is sailing from UBE to OSAKA with an ETA of 7 Sep 2026, 09:25 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 SEIJU MARU?+
SEIJU MARU broadcasts MMSI 431015322 and is registered as IMO 9900538, with call sign JD4847. 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 SEIJU MARU?+
SEIJU 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 SEIJU MARU?+
MarineRadar shows the latest AIS broadcast from SEIJU 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 SEIJU 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 SEIJU MARU?+
As a cargo, SEIJU 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. SEIJU MARU has a gross tonnage of 499 GT.

SEIJU MARU — Key Facts

MMSI
431015322
IMO number
9900538
Call sign
JD4847
Vessel type
Cargo
Flag state
JP
Navigation status
Under way using engine
Current speed
11.3 knots
Course over ground
73.0°
Heading
71°
Last known position
34.2575°, 133.4788°
Destination
OSAKA
ETA
2026-09-07T09:25:00Z
Departure port
UBE
Actual time of departure
2026-09-08T06:29:00Z
Current draught
3.7 m
Maximum static draught
3.6 m
Year built
2020-01-01
Gross tonnage
499
Dead weight
1730 t
AIS last updated
2026-09-08T17:50:00Z