Russia's Titanium Submarines 'Broke All the Records and Rules'

3 Points You Need to Know: During the Cold War, the Soviet Union experimented with building submarines from titanium, leading to the creation of the Project 705 Lira class in 1971. The Lira’s titanium hull made it one of the fastest and most advanced submarines of its time, capable of reaching speeds over 40 knots and diving to 2,200 feet.

-Titanium offered advantages like high strength, low weight, and corrosion resistance, but was difficult and expensive to work with.

-Despite its benefits...