EntityQ3025061· pop 9· linked from 186 articlesAnechoic tileSign in to savesonar reducing and sound altering tilesConnectionssonarEntityType XXIII submarineEntityWorld War IIConceptSoviet UnionConceptRichard WagnerEntityBaltic SeaEntityInternational Standard Book NumberEntityKielEntitysubmarineEntityUnited States NavyEntityadhesiveEntityWilhelmshavenEntitydecibelEntityKriegsmarineEntityDer Ring des NibelungenEntitynatural rubberEntityLittle BeltEntitycode nameEntityIG FarbenCompanyAkula-class submarineEntityCategoriesGerman inventions of the Nazi periodStealth technologySubmarine components