Horraantii Sebtember 1917, ka dib markii Jarmalku qabsaday dekedda Ruushka ee Riga, ciidamada badda Jarmalka waxay go'aansadeen inay ka saaraan ciidamada badda ee Ruushka ee wali haysta Gacanka Riga. Ujeedadaas awgeed, Admiralstab (Taliska Sare ee Ciidamada Badda) wuxuu bilaabay hawlgal lagu qabsanayo jasiiradaha Baltic ee Ösel, gaar ahaan baytariyada qoryaha Ruushka ee ku yaal Jasiiradda Sworbe. Bishii Sebtember 18, waxaa la soo saaray amar ah hawlgalka ciidanka iyo ciidamada badda ee wadajirka ah si loo qabsado jasiiradaha Ösel iyo Moon; qaybta ugu weyn ee badda waxay ka koobnayd calanka Moltke iyo III Battle Squadron ee Fleet ee Badda Sare. Waqtigan, Qaybta V waxaa ku jiray afar dagaalka Bayern iyo König-class. Qaybta VI waxay ka koobnayd shan dagaalka Kaiser-class.
Jasiiradaha Baltic ee Ösel, gaar ahaan batteriyada qoryaha ee Ruushka ee ku taal Jasiiradda Sworbe