Tanker · Flag JP
KOUOHMARU
KOUOHMARU is a tanker (MMSI 431012585, flag JP). Its last AIS position was reported on 15 Oct 2026 at 03:20 UTC near Port of Wakayama-Shimotsu Ko, bound for >JP OSA 2T / OFF.
Last position
Status: Under way using engine · Destination as broadcast: >JP OSA 2T / OFF · ETA as broadcast: 15 Oct 2026, 15:30 UTC
Position of MMSI 431012585, rounded to 0.01°; see the exact live position and the last 3 days on the live map.
Vessel details
| Name | KOUOHMARU |
|---|---|
| IMO number | – |
| MMSI | 431012585 |
| Call sign | JD4493 |
| Type | Tanker, carrying dangerous goods, category B |
| Flag | JP (from the MMSI country code) |
| Length × beam | 64 m × 10 m |
| Highest reported draught | 4.3 m (last 30 days) |
| Estimated deadweight | ≈ 1,620 t — estimated from AIS dimensions |
| Destination as broadcast | >JP OSA 2T / OFF |
| Seen in AIS | 14 Oct 2026 – 15 Oct 2026 (last 30 days) |
Port calls
No port calls detected in the last 60 days.
KOUOHMARU in the API
The full track, every port call and the live position of KOUOHMARU 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/431012585/track?from=2026-10-10&resolution=1h"
curl -H "Authorization: Bearer $AIS_TRAIL_KEY" \
"https://api.aistrail.com/v1/vessels/431012585/port-calls?from=2026-10-10"Sources
- Live AIS via aisstream.io, provided without warranty. No published terms
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.
