High-school teen builds submarine The submarine's body may be constructed from drainage pipes and the hatch from a recycled skylight, but according to its 18-year-old inventor, this single-person U-boat can plunge to a depth of 30 feet and has already completed three successful dives.
June 11, 2013 - CNN
Winston Churchill in Times Online Winston Churchill wrote later: "The only thing that really frightened me during the war was the U-boat peril."
Ian Chappell in Times Online Chappell called Sehwag "the greatest destroyer since the U-boat", and dismissed the accusation that he prospered only in home conditions by pointing out that he averaged almost 50 abroad.