R-class patrol boat
 The R class patrol boats was a class of Finnish patrol boats originally constructed as coastal minesweepers. They were modified into patrol boats by the end of the 1960s and transferred to the Patrol Flotilla and later to the 7th Missile Flotilla. They were then used for sea patrol and as anti-submarine warfare vessels. They were stricken from the Finnish Navy list in the 1990s.The R class was much liked in the Finnish Navy due to their low fuel consumption and their good seagoing qualities.