NS' large fleet of Coril based ships, including the Okra 86L light patrol ships, are powered by the CFM WSN-865J engine. A reliable but ageing engine which is ending production, NS will need to use their stockpile of engines for future Coril/Okra ships which join the fleet and for export from next year.
NS is developing a replacement engine using e-Core technology. The engine project is known as the "Mini Proton" and this could begin bench testing later this year with field tests next year. The new engine will be up to 40% more fuel efficient than the existing engine and have reduced IR emissions.
