the ka-27 come in four versions, the ka-27, 28, 29, and 32. the ka-27 is a naval helicopter with the co-axial rotors, having two variants, the ka-27pl which are used in pairs for anti-submarine use, and the ka-27ps which is used for search and rescue. the ka-28 is an export version of the ka-27pl. the ka-29 and ka-29tb are assault transport helicopters. the ka-32t is a utility transport helicopter, and the 32s is a utility version for operating in adverse weather. the 32k is a flying crane version of the ka-27.