 The vessels are of the Vik-Sandvik design VS 794 CGV, and were built by Myklebust Verft and operated by Remøy Management on behalf of the Norwegian Coast Guard.The Coast Guard expects a 90% decrease in NOx fume releases, and a 20% decrease in CO2 releases compared to a conventionally powered vessel of similar size.The ships are set to replace NoCGV "Chieftain", and "Stålbas".