The sailors, who were among a group of 16 abducted along with their vessel 'MV Asphalt Venture' off the Somali coast, had been released late last week.
They landed at the city airport earlier in the day by a flight from Nairobi, sources said.
According to sources, the seven were kept in captivity on land in Africa after the pirates released eight of their colleagues along with the ship three years ago.
Those who arrived here include Bahadur Singh (60) and Manjeet Singh (60) from Mumbai, Unnikrishnan Bhaskaran (60) and K George (40) from Kerala, Deniston (27) from Tamil Nadu, and Bhim Singh (40) from Vishakapatnam.
MV Asphalt Venture was one of the longest hostage sagas lasting over four years.
In the past two years, international naval forces, with active participation from the Indian Navy, have been patrolling the waters very aggressively, leading to a reduction in piracy incidents.
