This paper describes the product designs and properties of the newly-developed anti-corrosion steel plates and high fatigue property steel plates that are expected to reduce the life cycle cost (LCC) of ship. The anti-corrosion steel plates for crude oil tankers, “JFE-NAC5,” enhance the exchange period of upper deck plates 5 years longer than the conventional steel plates due to the improvement of corrosion resistance and the extension of primer lifetime. The anti-fatigue damage steel plates, “JFE-AFD,” show more than twice longer fatigue propagation life compared to conventional steel plates, as well as improving fatigue strength.