Of the total, 27 survived the tragedy and were admitted to hospital for treatment of wounds and also trauma counselling.
NDRF personnel have identified that the capsized boat was at a depth of 315 feet and suspect that the missing people might be stuck in the boat.
One helicopter of the Indian Navy and another of the ONGC have been pressed into service while eight boats were being used by NDRF and SDRF personnel to search for the people feared drowned.
Other family members of Ramana Babu postponed their trip to next month while about 11 members of his family, including him, set out on the trip.
The party said owing to lack of government control, the private operators were violating safety norms.
Doctors treating the survivors said most of them are stable, except one, who lost his family members in the tragedy.
Royal Vashista, the launch which capsized in the river Godavari at Kachuluru of Devitpatnam mandal in East Godavari district did not have permission to operate.
Several people were saved because of life jackets in the boat. Soleti Rajesh Kumar (23), and three others were among them.
At least 12 people drowned and 17 others were rescued after a boat carrying them to a tourist spot capsized in the swollen Godavari river.
The boat was proceeding to famous picturesque Papikondalu or Papi Hills when the mishap took place.
The total number of houses damaged because of the underground mishap has gone up to more than 80 and a total of 600 people had to be evacuated.
The Directorate of Factories and Boilers is yet to register a case in connection with the mishap in Nalco smelter plant on July 23 which had claimed two lives.
A trade union leader said as per rule, no apprentice trainee should have done the nature of work in which Parida was engaged.
24 power stations in nine states depend on Talcher coalfield for running their units
One of the injured, B Mithun Nath (28) of Balaramprasad, who sustained 90 per cent burns and was under treatment at a hospital in Delhi, died on Friday.