The Met office had warned storm surge of about 1.0 metres.
The Indian Navy was put on high alert on Wednesday, as cyclone Gaja approaches the coast of south Tamil Nadu and Puducherry, officials said.
Navy officials said the Eastern Naval Command (ENC) has assumed a high degree of readiness to render necessary humanitarian assistance as the cyclone is poised to cross the coast of the two states on Thursday evening.
"Two Indian Naval ships -- Ranvir and Khanjar -- are standing by to proceed to the most affected areas to undertake humanitarian aid and distress relief," said a Navy official.
He said these ships will have additional divers, doctors, inflatable rubber boats, integral helicopters and relief material on board.
The official said helicopters, Dornier aircraft and one P8I aircraft are on standby to undertake reconnaissance, rescue and casualty evacuation.