What engines would these old boats have used?

[Rasper]

I was once a marine engineer; now I am a writer. My current novel in progress has two boats:

• a tug built in 1894
• a Chesapeake Bay deadrise boat built in 1937 (The builder installed an old slow-turning engine built in the early 1900's)

My questions are:

• What gasoline engine would this tug have had in 1894? (It shows no signs of ever being steam powered.)
• What heavy slow-turning gasoline engine would the Chesapeake boat have?

I include photographs of the boats.

Richard

 

[ulgydog56]

the tug was most likely converted from steam, the other well, there were many manufactures of marine engines in that time period gray marine and so on, mite want to check a old boat colectors site..