indigenous development of three types of heat exchangers for naval vessels , basic cost for heat exchanger type 150kw dm water-sw cooler ( prototype & production version ) , basic cost for heat exchanger type 178kw dm water-sw cooler ( prototype & production version ) , basic cost for heat exchanger type 180kw dm water-sw cooler ( prototype & production version ) , development charges for sl no 1 ( prototype ) ( inclusive of fats & onboard trials ) , development charges for sl no 2 ( prototype ) ( inclusive of fats & onboard trials ) , development charges for sl no 3 ( prototype ) ( inclusive of fats & onboard trials ) , type testing charges ( prototype ) for sl no 1 , type testing charges ( prototype ) for sl no 2 , type testing charges ( prototype ) for sl no 3 , documentation chargesfor sl no 1 , documentation chargesfor sl no 2 , documentation chargesfor sl no 3 , packing, forwarding & freight insurance ( for sl no 1, sl no 2 & sl no 3 ) , onboardspares ( obs ) for sl no 1 , onboardspares ( obs ) for sl no 2 , onboardspares ( obs ) for sl no 3 => limited