Chief of the Naval Staff Admiral Sunil Lanba commissioned a Marine Commandos Unit, INS Karnav on July 12, 2016. The unit at Bheemunipatanam, Visakhapatnam is for the Marine Commando Force also called Marcos. Raised in February 1987, Marcos can operate at sea, in air and on land. The Marcos unit is called Magarmach or crocodile.