For me the ships are looking like galleys ("peregrine galley") or some of the yachts from this age. Anyone ever seen a picture of the "Royal Caroline" or equal ships? They were used as fast cruisers between England and the colonies in 18th century.

The hull seems a bit long for a Flute (overall proportions ...). Or it is the CA answer No. 236 for intrusive questions: "It's from a old build - we changed all ships 34 weeks ago"