CN SD60F

The SD60F was ordered and is operated by Canadian National and has a full-width cowl body and
crashworthy "safety cab" with a four-piece windshield.

The main disadvantage of the cowl unit is low rear visibility from the cab of the locomotive. The EMD
SD50F and SD60F, GE C40-8M and BBD HR-616 were given a Draper Taper (named after its creator, William L. Draper, a former Canadian National assistant chief of motive power) where the body is narrower immediately behind the cab, and gradually widens further aft, although the roof remains full-width the length of the locomotive. This improves rear visibility somewhat, but the locomotives still cannot lead a train in reverse as a hood unit can.