Exports of liquefied petroleum gases (LPGs – propane and butane) from the U.S. to international markets - are expected to nearly double from 460 Mb/d in 2014 to 915 Mb/d in 2019 as production from gas plant processing exceeds domestic demand. Available Very Large Gas Carrier (VLGC) vessels to carry these increased overseas volumes are limited. As a result spot freight rates have reached record levels recently. In today’s blog “Stayin’ Afloat With the LPGees – Part 4 Freight Voyage Calculation Model” Sandy Fielden walks through a voyage cost calculation. Today we walk through a voyage cost calculation.