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Japan flag

SEIHO MARU — Tug · MMSI 431012915

JPStopped
World map showing the last known position of SEIHO MARU at 34° 31.135' N, 133° 44.336' E
NSEW
Current PositionLive

SEIHO MARU is currently positioned in the Sea of Japan, at 34.5189° N, 133.7389° E. It is sailing from MIZUSHIMA to MIZUSHIMA with an ETA of 7 Sep 2026, 21:58 UTC. AIS position received 8 Sep 2026, 13:30 UTC.

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Updated 5 hours ago using terrestrial data
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Stopped
Current Navigational Status
0.0 kn
Speed
0.0°
/ 273°
Course / Heading
3.5 m
Static Draught
3.5 m
Current Draught

Voyage Tracker

ATD
21:40 UTCSep 7, 2026
ETA
21:58 UTCSep 7, 2026
SEIHO MARU

SEIHO MARU

Identity

Tug
Type
Japan flagJP
Flag
N/A
IMO Number
431012915
MMSI
JD4483
Call Sign

Specifications

37 m × 9 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
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Dive into the fleet, port, and flag state that SEIHO 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 Tugs
See the global fleet of tugs tracked on MarineRadar with live AIS data.
Departure Port
Port of MIZUSHIMA
Port traffic, arrivals and live vessel positions for MIZUSHIMA (JPMIZ).

About SEIHO MARU

Identity · Ownership · Class · Route

SEIHO MARU — Tug

SEIHO MARU is a tug registered under the Japan flag.

SEIHO MARU route and voyage history

SEIHO MARU is currently on a voyage from MIZUSHIMA to MIZUSHIMA with an estimated arrival on 2026-09-07T21:58:00Z. The live route and current course of SEIHO 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 SEIHO MARU can be seen in the Similar Vessels section above or in the full tug fleet at /vessel-type/tug-pilot-vessel.

  • MMSI: 431012915
  • Call sign: JD4483
  • Vessel type: Tug
  • Flag state: Japan

Frequently Asked Questions

Where is SEIHO MARU right now?+
SEIHO MARU is currently in the Sea of Japan, within the Japan / Korea shipping lane. It is sailing from MIZUSHIMA to MIZUSHIMA with an ETA of 7 Sep 2026, 21:58 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 SEIHO MARU?+
SEIHO MARU broadcasts MMSI 431012915, with call sign JD4483. 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 SEIHO MARU?+
SEIHO MARU is classified as a tug vessel registered under the JP flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full tug fleet at /vessel-type/tug-pilot-vessel and full JP flag list at /flag/jp.
How can I see the live position of SEIHO MARU?+
MarineRadar shows the latest AIS broadcast from SEIHO 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 SEIHO 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 SEIHO MARU?+
As a tug, SEIHO MARU sits in the same design class as the other tugs listed in the Similar Vessels section of the vessel page, or in the full tug directory at /vessel-type/tug-pilot-vessel.

SEIHO MARU — Key Facts

MMSI
431012915
Call sign
JD4483
Vessel type
Tug
Flag state
JP
Navigation status
Stopped
Current speed
0.0 knots
Course over ground
0.0°
Heading
273°
Last known position
34.5189°, 133.7389°
Destination
MIZUSHIMA
ETA
2026-09-07T21:58:00Z
Departure port
MIZUSHIMA
Actual time of departure
2026-09-07T21:40:00Z
Current draught
3.5 m
Maximum static draught
3.5 m
AIS last updated
2026-09-08T13:30:11Z