Norway flag

HYDROGRAF — Other · IMO 8416841

NOMoored
World map showing the last known position of HYDROGRAF at 58° 58.465' N, 5° 43.782' E
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Current PositionLive

HYDROGRAF is currently moored in the North Sea, at 58.9744° N, 5.7297° E. It is sailing from HORTEN to STAVANGER with an ETA of 6 Nov 2026, 15:00 UTC. AIS position received 7 Nov 2026, 10:43 UTC.

Updated 7 minutes using terrestrial data
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Moored
Current Navigational Status
0.0 kn
Speed
0.0°
/ 36°
Course / Heading
4 m
Static Draught
4 m
Current Draught

Voyage Tracker

Norway flag
HORTENNOHOR
ATD
16:53 UTCNov 5, 2026
ETA
15:00 UTCNov 6, 2026
HYDROGRAF

HYDROGRAF

Identity

Other
Type
Norway flagNO
Flag
8416841
IMO Number
257230500
MMSI
LNOW
Call Sign

Specifications

44 m × 10 m
Length × Breadth
1985-01-01
Year Built
454 t
Deadweight
642 t
Gross Tonnage
626 kW
Engine Power
SIMEK - FLEKKEFJORD, NORWAY
Builder
N/A
Class Society
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About HYDROGRAF

Identity · Ownership · Class · Route

HYDROGRAF — Vessel

Built in 1985, with a gross tonnage of 642 GT, and a dead weight of 454 tonnes, HYDROGRAF is a maritime vessel registered under the Norway flag. The vessel is owned by NORWAY GOVERNMENT - OSLO, NORWAY, built by SIMEK - FLEKKEFJORD, NORWAY.

HYDROGRAF route and voyage history

HYDROGRAF is currently on a voyage from HORTEN to STAVANGER with an estimated arrival on 2026-11-06T15:00:00Z. The live route and current course of HYDROGRAF 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 HYDROGRAF can be seen in the Similar Vessels section above.

  • MMSI: 257230500
  • IMO: 8416841
  • Call sign: LNOW
  • Flag state: Norway

Frequently Asked Questions

Where is HYDROGRAF right now?

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HYDROGRAF is currently moored in the North Sea. It is sailing from HORTEN to STAVANGER with an ETA of 6 Nov 2026, 15:00 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 HYDROGRAF?

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HYDROGRAF broadcasts MMSI 257230500 and is registered as IMO 8416841, with call sign LNOW. 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 HYDROGRAF?

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HYDROGRAF is a maritime vessel registered under the NO flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder and full NO flag list at /flag/no.

How can I see the live position of HYDROGRAF?

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MarineRadar shows the latest AIS broadcast from HYDROGRAF 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 HYDROGRAF's position updated?

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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 HYDROGRAF?

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The vessel's design class is inferred from its dimensions, gross tonnage and dead weight, all of which are listed in the Identity and Specifications panels on the vessel page. HYDROGRAF has a gross tonnage of 642 GT.

HYDROGRAF — Key Facts

MMSI
257230500
IMO number
8416841
Call sign
LNOW
Vessel type
Unknown
Flag state
NO
Navigation status
Moored
Current speed
0.0 knots
Course over ground
0.0°
Heading
36°
Last known position
58.9744°, 5.7297°
Destination
STAVANGER
ETA
2026-11-06T15:00:00Z
Departure port
HORTEN
Actual time of departure
2026-11-05T16:53:00Z
Current draught
4 m
Maximum static draught
4 m
Year built
1985-01-01
Gross tonnage
642
Dead weight
454 t
AIS last updated
2026-11-07T10:43:02Z