Titanium corrosion resistance, low density, high strength, medical titanium alloy resistance to seawater corrosion, machining, welding performance is good, and does not require heat treatment after welding, no heat affected zone embrittlement problem, as marine materials has broad prospects. Although very small quantities, but there are examples of titanium ship and get a high rating. Titanium titanium industry should strive to reduce costs and processing costs, and actively edited titanium design criteria and processing and shipbuilding skills and knowledge, and promote the application of titanium.
Titanium and steel as compared to very short history, has yet more than 100 years. But titanium is very rich in resources, in the form of TiO2 present in the ore into its reserves behind Al, Fe, Mg, ranking No. 4. Titanium is the first ship in the former Soviet Union in 1978 and 1983 made primary attack submarine, presumably under pressure hull is made of titanium. material titanium  The submarine water displacement of 2800t, underwater displacement of 3600t, diving depth of 600m. The first civilian titanium ship by Toho Titanium Company and third-party manufacturing rattan new shipyard competitive boats, launched in May 1985, registered in foreign countries. Ship boat length 17m, width 4m, height 2.5m, weight 2.8t. In addition to the cabin toughened plastic (FRP), all other made of titanium from the frame to the hull. Calculated according to the necessary strength, bottom selected 4mm-15mm thick titanium plate, deck thickness of 2.5mm titanium plates, ladder, steering wheel, and rudder shaft are also made of titanium rod.