Rescue operations have been initiated to bring them back to the shore.
Sources said the fishermen were 181 km (98 nautical miles) from the city and were travelling in a boat with Chennai registration. Rescue operations are being made by the Indian Coast Guard after the fishermen used the emergency alarm and alerted officials. It is learnt that the engine room of the boat was filled with water.
Speaking to News Today, Deputy Inspector General of Police, Coastal Security Group (CSG), K Bhavaneeswari said, "Search operations have been initiated. We are yet to get more information regarding the missing boats and the details of the fishermen."
It may be noted this is the third such incident to take place in this month alone. Sources said latest technologies are being used to locate and rescue the fishermen.
Earlier on 16 June, five fishermen who were stranded in the sea near Jagadapattinam coast were rescued and brought ashore by fellow fishermen after a mechanised boat sunk in rough weather.
Sources said the boat, which had ventured into the sea without obtaining the mandatory token, had sunk about six nautical miles away from Jagadapattinam near Pudukottai.
Similarly, the Indian Coast Guard personnel on 9 June rescued a Tamilnadu registered fishing boat stranded off New Mangalore Port with 10 crew members on board.
The boat named St.Joseph with registration number IND-TN-15-MM-5844, was stranded owing to engine failure. Coast Guard ship Amartya towed it to safety.
Only recently the two-month long fishing ban ended and fishermen ventured into the sea hoping a prize catch. 'The incident has come as a rude shock to us. We hope all of them will be rescued,' said Ravi, a fishermen at Kasimedu in the city.