The Pervenets-class ironclads were a group of three armored frigates built for the Imperial Russian Navy in the 1860s. The first ship was built in England because the Russian Empire lacked the ability to build its own ironclads, but the other two were built in Russia. All three ships differed from one another as the design evolved over time. None of the ships ever saw combat and only Kreml had an eventful career, sinking a wooden frigate in an collision in 1869 and sinking herself in 1885. She was refloated and returned to service. They were assigned to the Baltic Fleet upon completion and never left Russian waters. They served with the Gunnery Training Detachment for the bulk of their careers before being reduced to reserve in 1904. They were sold four years later and Pervenets and Ne Tron Menia were converted into coal barges. Pervenets survived World War II and was scrapped in the early 1960s, Ne Tron Menia was sunk during the war and scrapped around 1950, while Kreml's fate after her sale is unknown

The Russian ironclad Kreml was the third and last Pervenets-class broadside ironclad built for the Imperial Russian Navy during the mid-1860s. She joined the Baltic Fleet upon completion and accidentally sank a Russian frigate in 1869. The ship was assigned to the Gunnery Training Detachment in 1870 and was frequently rearmed. Kreml sank in shallow water after a storm in 1885; she was refloated and returned to service. The ship was placed in reserve in 1904 and disarmed the following year before being sold for scrap in 1908.