Old tech. Developed by UK and USA in the 50's thru the 70's. Russia and USA developed fast attack boats for their navies in the 70's. This ship is about ready to be retired. Take a look at newer designs pioneered by USA, UK, and in this case, Australia. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-nP1K6nS_lLQ.html
You do realize that this ship was an American design built in the 70s... There is a reason that they are not used widely anymore maybe you should do your research