A boy survived the sinking of a tourist boat in Vietnam which killed dozens of people by sheltering in an air pocket of the overturned vessel, it has emerged.

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.