Two shipyards in South Portland, built quickly in 1941 to construct cargo ships for the British and Americans, produced nearly 270 ships in two and a half years. Many of those vessels bore the names of notable Mainers.
The Doris Hamlin, a four-masted schooner built at the Frye-Flynn Shipyard in Harrington, was one of the last vessels launched there, marking the decline of a once vigorous shipbuilding industry in Washington County.
Maine's frozen rivers and lakes provided an economic opportunity. The state shipped thousands of tons of ice to ports along the East Coast and to the West Indies that workers had cut and packed in sawdust for shipment or later use.