U 45
U45 stands for:
- HMS Wild Goose (U45) , a modified Black Swan class sloop of the Royal Navy
U 45 denotes:
- SM U 45 , a submarine of the German Imperial Navy during the First World War
- an underground line in Dortmund; see Dortmund tram
- U 45 (Kriegsmarine) , a submarine of the German Wehrmacht in World War II
