Related time notesProjecting Mussonlini's Mare Nostrum: Italian 1920s & 1930s cruiser design/doctrine14 Jul 20222:35:12Two six-inch gun families preserve rival production linesNotable PointPatreon Video 4: Tsingtao 1939 Goes Hot...17 Aug 20203:15:25Britain still had a 15-inch gun pipeline in 1939Q&A