Ship Abbreviations and Symbols - United States Navy
WFB -- White-Forster-type boiler (manufactured by Babcock and Wilcox). Wint -- Winton Engine Corp., Cleveland, Ohio. WIW -- Washington Iron Works, Seattle, Washington. WL -- water line. WM -- White and Middleton Co., Springfield, Ohio. WSA -- War Shipping Administration. wt. -- water-tube boiler. WTDF -- water-tube single-furnace boiler.
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