RB-50 SuperfortressRB 50 Superfortress Boeing airplane model. Several RB 50Bs were modified at Boeing Wichita with SHORAN navigation radar for special missions. These planes were redesignated RB 50F. The SHORAN radar navigation system was used to conduct mapping, charting, and geodetic surveys. However, it was found in practice that the SHORAN system interfered with the RB 50F's defensive armament, so the SHORAN radar and its associated equipment were housed in