USS Salmon D-3 SS-19 periscope fish flag surfacing 165-WW-338B-058_001
USS D-3 (Submarine # 19) Coming to the Surface, prior to World War I. Photographed by N. Moser, New York, and Enrique Muller, Jr. Note the submarine fish flag atop her after periscope and winch for handling torpedoes. She has a “D-3” on her bow, partially submerged, and a “2” for Submarine Squadron Two, on her sail. 165-WW-338B-58 via NARA