At the beginning of the war, the He 115 was used for dropping parachute mines in British waters, normally aiming for narrow passages in close vicinity of heavily trafficked ports on the English south coast.
Seven Norwegian He-115s, five of them He-115Ns, were employed against German and German-controlled ships (see: HNoMS Uller), as well as providing ground support to the Norwegian Army's offensive on the Narvik Front.