Tanker · Flag JP
YOUWAMARU
YOUWAMARU is a tanker (IMO 9810173, MMSI 431010077, flag JP). Its last AIS position was reported on 16 Oct 2026 at 14:21 UTC near Port of Uraga Ko, bound for >JP MUR OFF. AIS Trail recorded 2 port calls in the last 60 days, most recently at Hachinohe Ko.
Last position
Status: Under way using engine · Destination as broadcast: >JP MUR OFF · ETA as broadcast: 18 Oct 2026, 16:00 UTC
Position of MMSI 431010077, rounded to 0.01°; see the exact live position and the last 3 days on the live map.
Vessel details
| Name | YOUWAMARU |
|---|---|
| IMO number | 9810173 |
| MMSI | 431010077 |
| Call sign | JD4248 |
| Type | Tanker |
| Flag | JP (from the MMSI country code) |
| Length × beam | 105 m × 16 m |
| Highest reported draught | 6.5 m (last 30 days) |
| Estimated deadweight | ≈ 6,690 t — estimated from AIS dimensions |
| Destination as broadcast | >JP MUR OFF |
| Seen in AIS | 10 Oct 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 |
|---|---|---|---|
| Hachinohe Ko JPHHE | 12 Oct 2026, 23:46 UTC | 13 Oct 2026, 04:43 UTC | 4 h 56 min |
| Kawasaki Ko JPKWS | 10 Oct 2026, 18:22 UTC | 10 Oct 2026, 21:52 UTC | 3 h 30 min |
YOUWAMARU in the API
The full track, every port call and the live position of YOUWAMARU 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/9810173/track?from=2026-10-10&resolution=1h"
curl -H "Authorization: Bearer $AIS_TRAIL_KEY" \
"https://api.aistrail.com/v1/vessels/imo/9810173/port-calls?from=2026-10-10"Sources
- Live AIS via aisstream.io, provided without warranty. No published terms
- 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.
