The term "whaleback" has also been applied to a type of high speed launch first designed for the Royal Air Force during World War II, and to certain smaller rescue and research vessels especially in Europe that, like the Great Lakes vessels, have hulls that curve over to meet the deck.
The SS Charles W. Wetmore was a whaleback freighter built in 1891 by Alexander McDougall's American Steel Barge Company shipyard in Superior, Wisconsin, USA.