Please don’t let anyone behind on that boat. There is so little air left, there is a small chance of surviving,” said one survivor.

A tourist boat capsized during a sudden thunderstorm in Vietnam on Saturday afternoon during a sightseeing excursion, killing at least 34 people and prompting a search for others who remain missing, state media reported.

A tourist boat capsized during a typhoon in Vietnam's Hạ Long Bay on Saturday, July 19, resulting in 34 bodies being found.