Shivaji was unable to win Janjira after multiple attempts. He then located a place to build another sea fort which could check the movements at Janjira. Padmadurg or Kansa was build at a visual range from Janjira, just 4 kms across the sea. The stones in it's fortification wall are worn off due to constantly lashing waves but the material used between them is still intact and can be seen protruding out.