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South Korea flag

JK 23 — Tug · MMSI 440120490

KRClass B
World map showing the last known position of JK 23 at 35° 2.833' N, 128° 25.907' E
NSEW
Current PositionLive

JK 23 is currently positioned in the Sea of Japan, at 35.0472° N, 128.4318° E. It is sailing from OKPO to GOSEONG with an ETA of 8 Sep 2026, 08:22 UTC. AIS position received 8 Sep 2026, 20:04 UTC.

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Updated 2 hours ago using terrestrial data
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Class B
Current Navigational Status
0.0 kn
Speed
0.0°
/ 511°
Course / Heading
3 m
Static Draught
3 m
Current Draught

Voyage Tracker

South Korea flag
OKPOKROKP
ATD
01:20 UTCSep 8, 2026
South Korea flag
GOSEONGKRGSO
ETA
08:22 UTCSep 8, 2026
JK 23

JK 23

Identity

Tug
Type
South Korea flagKR
Flag
N/A
IMO Number
440120490
MMSI
D9SP
Call Sign

Specifications

N/A
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 JK 23 is part of.

Flag State
All KR-flagged vessels
Browse every ship currently registered under the KR 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 OKPO
Port traffic, arrivals and live vessel positions for OKPO (KROKP).
Destination Port
Port of GOSEONG
Arrivals, berth specifications, and live vessel traffic for GOSEONG (KRGSO).

About JK 23

Identity · Ownership · Class · Route

JK 23 — Tug

JK 23 is a tug registered under the South Korea flag.

JK 23 route and voyage history

JK 23 is currently on a voyage from OKPO to GOSEONG with an estimated arrival on 2026-09-08T08:22:00Z. The live route and current course of JK 23 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 JK 23 can be seen in the Similar Vessels section above or in the full tug fleet at /vessel-type/tug-pilot-vessel.

Frequently Asked Questions

Where is JK 23 right now?+
JK 23 is currently in the Sea of Japan, within the Japan / Korea shipping lane. It is sailing from OKPO to GOSEONG with an ETA of 8 Sep 2026, 08:22 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 JK 23?+
JK 23 broadcasts MMSI 440120490, with call sign D9SP. 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 JK 23?+
JK 23 is classified as a tug vessel registered under the KR 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 KR flag list at /flag/kr.
How can I see the live position of JK 23?+
MarineRadar shows the latest AIS broadcast from JK 23 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 JK 23'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 JK 23?+
As a tug, JK 23 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.

JK 23 — Key Facts

MMSI
440120490
Call sign
D9SP
Vessel type
Tug
Flag state
KR
Navigation status
Class B
Current speed
0.0 knots
Course over ground
0.0°
Heading
511°
Last known position
35.0472°, 128.4318°
Destination
GOSEONG
ETA
2026-09-08T08:22:00Z
Departure port
OKPO
Actual time of departure
2026-09-08T01:20:00Z
Current draught
3 m
Maximum static draught
3 m
AIS last updated
2026-09-08T20:04:41Z