I-Bunker adjustment factor (BAF), eyaziwa nangokuthi i-fuel adjustment factor (FAF), umnikelo we-bunker (BUC), kanye nenkokhelo ye-bunker, ibonisa ukushintshashintsha kukaphethiloli womkhumbi futhi ihlotshaniswa nentengo yebhentshimakhi yentengo ye-Brent Oil.
Abathwali bakhokhisa i-BAF njengohlobo lomshwalense uma kuqhathaniswa nokushintsha kwentengo kaphethiloli, njengoba ukunyuka kwezindleko zikaphethiloli kuholela ekwenyukeni kwe-BAF. Ihluka ngokuya ngemigudu yokuhweba futhi yengezwe ngaphezu kwesilinganiso esiyisisekelo esivame ukubuyekezwa ngekota ngayinye.
Ifomula ye-BAF = inani likaphethiloli x isici sokuhweba
Isici sokuhweba sibhekisela ekusetshenzisweni kukaphethiloli okumaphakathi okuhlukahluka kuye ngebanga, isisindo somthwalo, ukonga kukaphethiloli, ubude besikhathi sokuthutha, umzila, njll.