Mezue ahịrịokwu a: Chayka Naval Air Base () bụ a
Ebe ndị agha mmiri Bulgaria. Enwere ike ide ya 'Tchaika' ma mgbe ụfọdụ a na-akpọ ya Varna-Chaika. Chaika pụtara seagull n'asụsụ Bulgarian. Ọ dị na nsọtụ ugwu nke ọnụ mmiri osimiri na ndịda obodo Varna n'ụsọ Oké Osimiri Ojii.