Canticum Calamitatis Maritimae ("Song of Maritime Calamity") is an eight-part, a cappella classical choral composition by the Finnish composer Jaakko Mäntyjärvi. Completed in 1997,[1] the piece was inspired by the MS Estonia disaster of 1994. It won third prize in the European composition competition for cathedral choirs in 1997.[2] The piece is approximately 12 minutes in duration.