Editing Cab unit (section)

==Cowl unit==
A [[cowl unit]] is an adaptation of the [[hood unit]] design with a full-width body. Despite some visual similarities, cowl units are actually very different from cab units.  All structural support on a cowl unit is provided by the frame of the locomotive, rather than in the body as with a cab unit. This allows manufacturers to cheaply and easily create full-width locomotives from their hood unit designs by simply adding cowling.  Cowl units were first introduced as a special order from the Santa Fe, which wanted a sleeker design for its passenger equipped hood units. Although the first cowl units (such as the [[EMD FP45]] and the [[GE U30CG]]) were meant for passenger service, EMD would later offer freight-only derivatives starting with the [[EMD F45|F45]].