Sail powered cargo ships were used until mid-20th century. So, for about 100 years there were both steam and sail powered ships in operation - roughly the amou

Sail powered cargo ships were used until mid-20th century. So, for about 100 years there were both steam and sail powered ships in operation - roughly the amount of time we've had ICE cars. https://en.wikipedia.org/wiki/Grain_race https://en.wikipedia.org/wiki/Grain_race