Tug · Flag ID
TB SEMAR 21
TB SEMAR 21 is a tug (IMO 9666144, MMSI 525020121, flag ID). Its last AIS position was reported on 15 Oct 2026 at 02:37 UTC.
Last position
Status: Under way using engine
Position of MMSI 525020121, rounded to 0.01°; see the exact live position and the last 3 days on the live map.
Vessel details
| Name | TB SEMAR 21 |
|---|---|
| IMO number | 9666144 |
| MMSI | 525020121 |
| Call sign | YDA3183 |
| Type | Tug |
| Flag | ID (from the MMSI country code) |
| Length × beam | 26 m × 8 m |
| Highest reported draught | – |
| Estimated deadweight | – |
| Destination as broadcast | – |
| Seen in AIS | 10 Oct 2026 – 15 Oct 2026 (last 30 days) |
Port calls
No port calls detected in the last 60 days.
TB SEMAR 21 in the API
The full track, every port call and the live position of TB SEMAR 21 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/9666144/track?from=2026-10-10&resolution=1h"
curl -H "Authorization: Bearer $AIS_TRAIL_KEY" \
"https://api.aistrail.com/v1/vessels/imo/9666144/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.
