is characterised by having only one heat exchanger cooled by seawater, and by the other coolers, including the jacket water cooler, being cooled by the freshwater low temperature (FW-LT) system.
To prevent too high a scavenge air temperature, the cooling water design temperature in the FW-LT system is normally 36 °C , corresponding to a max. s.w. temp. of 32 °C