Bagaarka daryeelka waxaa laga heli kara ah qayaro ama bagaarka ee ka mid ah intaas oo ku jirin in ay ugu soo degganaan daryeelka guriga, daryeelka petroleumka oo ku saabsan, ama dadweynaha daryeelka - ku saabso. Bagaarka daryeelka ee ku jirin dhulka waa shuugaal ama bagaarada ee lacag dheer ah ee ku jirin tanka dheer ah, markii hore bagaarka daryeelka ee ku jirin badbaadada waa baggaarada kale oo ku jirin shaqsiyada xiddigta ah ee ka mid ah intaas oo ugu soo degganaan daryeelka gacanta badbaadada. Tankooyinka bagaarka daryeelka waa la construction kara ah materials kale oo ku jirin steel ama stainless steel intuu ugu yaraan in uu ugu sameyn doontaan cunooyinka iyo korosive effects ee daryeelka. Waxaa lagu yimid in ay ugu muuqdaan pumping systems, valves, iyo hoses ee la sameyn doontaan in uu ugu sameyn doontaan daryeelka, u soo degganaan, iyo unidhinta. Safety features, kuwa ku jir double - hulls, emergency shut - off valves, iyo leak - detection systems, waa standard ee la samayn doontaan in uu u caddeysto spills iyo in uu ugu sameyn doontaan safe transit ee daryeelka, oo waa loo eeg ah intuu ugu yaraan in ay ku sameyn doontaan global energy supply.