Rubuta ci gaba ga wannan sakin layi - Bayan karɓar "UB-8" ta Navy Bulgarian
, an sake masa suna "Podvodnik No. 18" (a cikin Cyrillic: "Подводник No18"). Kodayake ba a ba da sanarwar bikin "Podvodnik No. 18" ga jaridu ba, amma Yarima Boris da ɗan'uwansa Yarima Kiril sun halarta, waɗanda duka suka hau jirgin ruwan don tafiya ta farko zuwa Euxinograd, fadar bazara ta Bulgaria da ke arewacin Varna. A cikin sabis na Bulgarian, jirgin ruwan yana dauke da makamai tare da bindiga wanda ya kara da bindigarsa.