 Type 6610 is the Chinese version of the original Soviet Project 254M minesweeper, with a dozen modifications to meet Chinese needs, which include all conversion made in Type 6605, and furthermore, additional modifications included conversion of storage room, upgrade of ventilation system and electric power generator.A total of four were completed.Type 05 is also referred as "South Sea Design" (Nan-Hai Fang-An, 南海方案), a design built by Guangzhou shipyard, tailored specifically for operations in South China Sea.