During the American Revolution, Principio Furnace, located near the mouth of the Susquehanna River at the top of the Chesapeake Bay, was one of the few places where the colonists could make their own cannons. Consequently, the British showed up and burned it without much resistance.

In my alternative history here, the colonists manage to scare up Finch and Robin, a pair of cutters mounting 4 pounders to attempt to stop the British attack.

The view looking up the Susquehanna with the two cutters hiding behind Garrett Island.

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Having been alerted to the approach of a British sloop, the cutters move downstream.

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Aboard Swan, the British become aware of the American presence.

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