1.6 Oil fuel transfer From these receiving stations. the oil flows to double-bottom, peak or BUNKERING ROUTINES Guidelines for bunkering of fuels deep bunker tanks and can be transferred from forward to aft and 7 fro om port to starboard (and vice versa) and from settling to service tanks via filters separators and clarifiers thence to boilers or engines1.6 Oil fuel transfer • From these receiving stations, the oil flows to double-bottom, peak or deep bunker tanks and can be transferred from forward to aft and from port to starboard (and vice versa) and from settling to service tanks via filters, separators and clarifiers, thence to boilers or engines