Vessel · Flag NO
HYDROGRAF
HYDROGRAF is a vessel (IMO 8416841, MMSI 257230500, flag NO). Its last AIS position was reported on 16 Oct 2026 at 20:36 UTC in Port of Horten, bound for HORTEN. AIS Trail recorded 5 port calls in the last 60 days, most recently at Horten.
Last position
Status: Moored · Destination as broadcast: HORTEN · ETA as broadcast: 9 Oct 2026, 12:00 UTC
Position of MMSI 257230500, rounded to 0.01°; see the exact live position and the last 3 days on the live map.
Vessel details
| Name | HYDROGRAF |
|---|---|
| IMO number | 8416841 |
| MMSI | 257230500 |
| Call sign | LNOW |
| Type | Other type |
| Flag | NO (from the MMSI country code) |
| Length × beam | 44 m × 10 m |
| Highest reported draught | 4.0 m (last 30 days) |
| Estimated deadweight | – |
| Destination as broadcast | HORTEN |
| Seen in AIS | 21 Sep 2026 – 16 Oct 2026 (last 30 days) |
Port calls
Port calls detected by AIS Trail in the last 60 days, newest first.
| Port | Arrived (UTC) | Departed (UTC) | Time in port |
|---|---|---|---|
| Horten NOHOR | 10 Oct 2026, 18:15 UTC | No departure yet | – |
| Skjærhalden NOSKH | 29 Sep 2026, 09:00 UTC | 29 Sep 2026, 11:04 UTC | 2 h 3 min |
| Fredrikstad NOFRK | 28 Sep 2026, 17:10 UTC | 29 Sep 2026, 06:11 UTC | 13 h |
| Sandefjorden NOSAD | 22 Sep 2026, 16:06 UTC | 22 Sep 2026, 21:51 UTC | 5 h 45 min |
| Risor NORIS | 21 Sep 2026, 20:56 UTC | 22 Sep 2026, 06:07 UTC | 9 h 10 min |
HYDROGRAF in the API
The full track, every port call and the live position of HYDROGRAF are available through the AIS Trail API. A free key covers the last 7 days of history; paid plans cover the last 12 months, and Pro and Business add live positions.
curl -H "Authorization: Bearer $AIS_TRAIL_KEY" \
"https://api.aistrail.com/v1/vessels/imo/8416841/track?from=2026-10-10&resolution=1h"
curl -H "Authorization: Bearer $AIS_TRAIL_KEY" \
"https://api.aistrail.com/v1/vessels/imo/8416841/port-calls?from=2026-10-10"Sources
- Live AIS via aisstream.io, provided without warranty. No published terms
- Data delivered by BarentsWatch NLOD 2.0
- Contains data from the Danish Maritime Authority that is used in accordance with the conditions for the use of Danish public data. Conditions for the use of Danish public data
- Port reference: UN/LOCODE, United Nations Economic Commission for Europe (UNECE), https://unlocode.unece.org, license CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: port entries selected, deduplicated and merged with the World Port Index.
- Port reference: World Port Index (Pub. 150), National Geospatial-Intelligence Agency (NGA).
Flags come from the MMSI country code, deadweight and size class are estimates from AIS dimensions, port calls are detected by AIS Trail from position reports. All sources and licences: Data sources.
Not for navigation. AIS data can be missing, delayed or wrong; do not use it for navigation, collision avoidance, search and rescue or any other safety-of-life purpose.
