There is an interesting power point presentation, “The Changing Face of OPV Design and Cost Drivers,” available here (pdf). Apparently it was presented at the OPV Asia Conference in Singapore, April 5-7, 2011, by the President of STX Canada Marine Inc./STX US Marine Inc. These are divisions of STX Offshore and Shipbuilding headquartered in South Korea with 18 shipyards in eight different countries.

There is a series of charts discussing the effects of increased size, increased speed, and increasing levels of combat and surveillance capabilities have on cost.

STX is the maker of the Royal New Zealand Navy’s ice strengthened OPVs “Otago“ and “Wellington.”