Matches in DBpedia 2015-10 for { ?s ?p "Surface-underwater ship — an attempt to create a hybrid warship, that combines the properties of a surface ship and submarine. Attempts to create such hybrids were made with the late 19th century to the present time. None of the projects have proved to be successful for a variety of requirements for surface ships and submarines.The earliest surface-underwater ships considered to be the U.S."@en }
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- Surface-underwater_ship comment "Surface-underwater ship — an attempt to create a hybrid warship, that combines the properties of a surface ship and submarine. Attempts to create such hybrids were made with the late 19th century to the present time. None of the projects have proved to be successful for a variety of requirements for surface ships and submarines.The earliest surface-underwater ships considered to be the U.S.".