Konstantin Olshansky, formerly known as BDK-56, is a Project 775 large landing ship of the Ukrainian Navy. The ship was built in Poland, launched in 1985 and initially served in the Soviet Navy where the vessel was renamed after Soviet Naval Infantry officer Konstantin Olshansky. The landing ship was transferred to Ukraine in 1996. On 24 March 2014, the ship was captured by Russian forces during the Crimean crisis.