EntityQ1719789· pop 7· linked from 174 articlesUD-class submarineSign in to save1915 class of German submarinesConnectionsmetric horsepowerEntityImperial German NavyEntitydisplacementEntitycoastal defense shipEntitylength overallEntitylist of U-boats of GermanyEntityType UE I submarineEntitySubmarine hullEntityConvoys HX 229/SC 122EntityNorwayCountryGermanEntityMediterranean SeaEntityWorld War IConceptGibraltarEntityNorth SeaEntityInternational Standard Book NumberEntityKielEntitysubmarineEntityAnnapolisEntityStrait of GibraltarEntityCategoriesGerman Type U 66 submarinesShip infoboxes without an imageSubmarine classesWorld War I submarines of Germany