Where:
PV is the Present Value of the series of annual user fees to be prepaid (the net amount to be prepaid)
RO is the published user fee of the vessel
i is the interest rate for 10-year Treasury notes at the time of prepayment calculation
[PI] is the rate of inflation (based on projected military personnel costs at the time of prepayment calculation)
n is the total number of years to be prepaid
t is the number of years after prepayment of the fee, for each annual increment (t = 0, 1, 2, 3 ... n)
46 C.F.R. §2.10-105