The boat was heading to Panyi Island at 2pm when the navigator fell overboard, the impact of which made the boat overturn, said the Thai Maritime Enforcement Command Centre.
Of the tourists two hailed from Ireland, one from the Philippines and one from Switzerland. All seven were rescued by boats nearby and delivered to Phang Nga’s Takua Thung district, the officials said.
Nobody was injured as all passengers were wearing life jackets, the officials said, adding that they will investigate the case further to seek the cause of the accident.