 In order to man the extra weaponry, the numbers of total complement is increased from the original 65 - 70 of the Soviet T-43 class minesweeper to 80.Both of Type 010 and T-43 class minesweepers can be used as minelayers and submarine chasers, but the T-43 class cannot be used for patrol roles.Drastic changes were made in comparison to the original Soviet Project 254 design, with total of 818 modifications / upgrades were applied to the Type 010 design, which was finalized in December 1981, 23 years after the first Type 6610 entered service, and the prolonged development was mainly due to the political turmoil in China.