MH-60S Knighthawk

The MH-60S Knighthawk is a twin-engines intermediate lift utility helicopter.  It is equipped with a single 4-bladed rotor and a single 4-bladed tail rotor.  The basic crew compliment for the MH-60S is four personalize person only. The pilot, co-pilot, crew chief and the gunner.
 
The MH-60S was designed to serve as a substitute for the CH-46D Sea Knight and the SH-3 Sea King in the VERTREP (vertical replenishment) and personnel bring role, the HH-60H in the battle search and rescue (CSAR) role, the MH-53E Sea Dragon in the mine counter procedures role.  As such, it is accurately a hybrid of two different airframes.