Capsizing of the Wonder Sea
| Date | 19 July 2025 |
|---|---|
| Time | 13:30 ICT (UTC+7) |
| Location | Hạ Long Bay, Vietnam |
| Coordinates | 20°52′24″N 107°04′30″E / 20.8733°N 107.0750°E |
| Cause | Undetermined; ascribed to thunderstorm |
| Deaths | 39 |
| Non-fatal injuries | 10 |
On 19 July 2025, the tourist boat Wonder Sea capsized due to high winds during an abrupt thunderstorm in Hạ Long Bay, Vietnam, killing 39 people, while 10 people were rescued with non-fatal injuries. The incident took place during a tour, and a rescue operation began after contact with the ship was lost. It was reported as the deadliest naval accident in Vietnam in over 20 years.