Admiral Sunil Lanba, the Chief of Naval Staff, on Tuesday commissioned the Marine Commandos (MARCOS-East) unit as 'INS Karna' at a function at INS Kalinga in the district.
95 aircraft, 16 ships and 2 submarines from 3 countries are taking part in Malabar exercise.
INS Tihayu, specifically built for meeting needs of extended coastal and offshore surveillance and patrol, has a length of 49.9 metres and maximum breadth of 7.5 meters.
Meanwhile, the search and rescue team is seeking satellite imagery to find any clue of the plane that lost contact over the Bay of Bengal.
"INS Kiltan strengthens our defence system and will be a shining armour in our 'Make in India' programme," Sitharaman said.
'An ASW corvette without towed array sonar and an ASW helicopter is nothing more than a feeble joke,' says a retired navy commodore.