Tug · Flag CN
CHANGDA21
CHANGDA21 is a tug (IMO 9631292, MMSI 412475970, flag CN). Its last AIS position was reported on 17 Oct 2026 at 06:16 UTC near Port of Pingtan, bound for PINGTAN.
Last position
Status: At anchor · Destination as broadcast: PINGTAN · ETA as broadcast: 17 Sep 2026, 15:20 UTC
Position of MMSI 412475970, rounded to 0.01°; see the exact live position and the last 3 days on the live map.
Vessel details
| Name | CHANGDA21 |
|---|---|
| IMO number | 9631292 |
| MMSI | 412475970 |
| Call sign | BSAI |
| Type | Tug |
| Flag | CN (from the MMSI country code) |
| Length × beam | 50 m × 12 m |
| Highest reported draught | 4.2 m (last 30 days) |
| Estimated deadweight | – |
| Destination as broadcast | PINGTAN |
| Seen in AIS | 17 Oct 2026 – 17 Oct 2026 (last 30 days) |
Port calls
No port calls detected in the last 60 days.
CHANGDA21 in the API
The full track, every port call and the live position of CHANGDA21 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/9631292/track?from=2026-10-11&resolution=1h"
curl -H "Authorization: Bearer $AIS_TRAIL_KEY" \
"https://api.aistrail.com/v1/vessels/imo/9631292/port-calls?from=2026-10-11"Sources
- Open Waters AIS (https://openwaters.io/ais/), with each event's own source credit (mostly AISHub (https://www.aishub.net) and aisstream.io). Per-event source licence; not merged
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.
