635 times a month, all year round. By company: 15 a month with Sundarban Navigation, three a day with Bikrampur Shipping Corporation, three with Eagle Group, three with Sonar Tari Group, three a week with Farhan Navigation, two a day with Bogdadia Group, two with Mayur Group, two with Raf Raf Group, two with Zam Zam Group, one with Al-Borak Group, one with Bengal Shipping Company and one with Meghna Rani.