The Kennebec River meets the Atlantic Ocean at Merrymeeting Bay, just past the shipbuilding centre of Bath. The English Popham Colony was founded on the Kennebec in 1607. The settlers there built the "Virginia", the first ocean-going vessel built in the New World by English-speaking shipwrights. Hundreds of wooden and steel vessels have since been launched on the Kennebec.
At the end of this beach stands Fort Popham, a granite block crescent-shaped defence protecting the mouth of the river. Built in 1857, it was garrisoned during the American Civil War.