. . . . . . "--03-09"^^ . . . . . "SM U-77 was one of 329 submarines serving in the Imperial German Navy in World War I, engaged in commerce warfare during the First Battle of the Atlantic."@en . . "SM U-77"@en . . . . . . . . . . . . "SM U-77 was one of 329 submarines serving in the Imperial German Navy in World War I, engaged in commerce warfare during the First Battle of the Atlantic."@en .