This submarine-yacht hybrid can stay underwater for FOUR days
Close-up of a deck gun on a German U-Boat , early twentieth century. News Photo - Getty Images
Captured German U-boat, World War I - Stock Image - C014/2044 - Science Photo Library
Amazon.com: Historic Photographs, LLC Photo: German U-Boat in N.Y,New York,Unterseeboot,Undersea Boat,Bain News Service,2: Photographs
World War I, crew of the German U-boat U-58 on deck as it is captured by the American Navy, U.S. Navy photo, 1918 Stock Photo - Alamy
Battleship Sinks Submarine: How HMS Dreadnought Rammed and Sunk a U-Boat During World War I | The National Interest
Submarine Photo Index
One of the notorious U-boats stranded on the south coast of England after surrender - LOC's Public Domain Archive Public Domain Search
OTD 1916 - A U.S. Navy crew a... - Naval War College Museum | Facebook
Lusitania | History, Sinking, Facts, & Significance | Britannica
Jackies on U-Boat (LOC) | Bain News Service,, publisher. Jac… | Flickr
German U-Boat in N.Y. (LOC) | Bain News Service,, publisher.… | Flickr
RMS Lusitania - Wikipedia
German U-Boat in N.Y. (LOC) | Bain News Service,, publisher.… | Flickr
Submarine Photo Index
LC-USZ62-38935: German submarine: U 53, at New York, April 24, 1919
Pantomime at Sea: Q-ships in WW1 | The Western Front Association
U-boat Tactics in World War II (Elite): Williamson, Gordon, Palmer, Ian: 9781849081733: Amazon.com: Books
When a German U-Boat submarine and tanks ended up in New York's Central Park, 1917-1918 - Rare Historical Photos
