Kolkata: At least 19 fishermen have gone missing after three trawlers capsized in the sea off Frazerganj Harbour in South 24-Parganas, late on Monday night.Sunderban Superintendent of Police Tathagata Basu said a hovercraft and an airplane have been pressed into service to look for the missing persons.Bijan Maity, the secretary of West Bengal United Fishermen Association, informed that the fishermen who had gone for fishing in the deep sea and went missing, hailed from Kakdwip and Frazerganj. Also Read – Rain batters Kolkata, cripples normal life”Although many trawlers could return to safety, three boats – MV Malleshwar, MV Joykishan and MV Maa Shibani capsized in the sea. 10 fishermen of MV Joykishan and six of MV Malleshwar went missing, while three fishermen who were flung into the sea from different trawlers are also in the missing list,” Maity said.Ten trawlers belonging to the Samity immediately started a rescue operation but failed to trace anybody. The Coast Guard has also started a rescue operation on Tuesday, in coordination with the state Disaster Management department.The fishermen had set sail into the Bay of Bengal around 10 am on Monday. They had claimed that there was no warning of the Weather department on radio.It was around 4 pm when the weather turned rough and huge waves, accompanied with gusty winds, overturned the three trawlers in the sea.The Met office website, however, shows that the fishermen had been advised against venturing into the sea on Monday.