Gundalow

A model of the USS Philadelphia (1776), sunk in the Battle of Valcour Island

A gundalow (also known in period accounts as a "gondola") is a type of flat-bottomed sailing barge once common in Maine and New Hampshire rivers, United States. It first appeared in the mid-1600s, reached maturity of design in the 1700 and 1800s, and lingered into the early 1900s before nearly vanishing as a commercial watercraft.[1]