eli5: How did Paddlesteamers work in 19. Century?

Question

Especially ocean-going ships from Britian in the 1840s.

In: Engineering

Answer 1

Burn Coal -> heat water to steam -> use steam in a large piston stream engine to spin large paddle wheel

Answer 2

Also stern-wheelers on the Mississippi, wood-fired.

Britain still has an ocean-going paddle steamer, called the Waverley.