However, TPO had a limited capacity of tankers -- company owned and leased -- available. The amount of capacity needed to deliver one barrel from one destination to another depended upon the distance traveled, port time, and other factors. To simply the estimation of its tanker capacity, TPO had defined an equivalent "standard" tanker. The capacities of tankers of various sizes it had available were then converted to the equivalent "standard" tankers. TPO's fleet has a capacity of 26.4 equivalent standard tankers. The table below lists the fraction of one equivalent "standard" tanker needed to deliver 1,000 b/d over the indicated routes. Tanker Usage Factor (Equivalent "standard" tanker used per 1000 b/d) From To Australia Japan Iran 0.12 0.11 Borneo 0.05 0.045 Philippines 0.02 0.01 New Zealand 0.01 0.06 It was also possible to charter independent tankers. The rate for this was $12,800 per day for a standard tanker