After initial success with the 9 DNS-1 prototypes, the Navy ordered three Aircraft [N-200 to N-202] under Contract NOas 59-0219-c, Amendment 1. These aircraft wer epowered by two Porsche YO-95-6 gasoline engines and also carried one Mk 43 homing torpedo. The DNS-2 were to qualify the DASH specifications and to serve as the test bed for the QH-50Cs automatic flight control system including shipboard checkout of LAD up to sea state 3. Administratively redesignated QH-50B in Oct 1962. All three airframes were stored for many years and scrapped in 2002.