Hi my name is john harkness

My interest is in gas boats but my father has always loved subs. My grandfather was a submariner sadly i never met him as he went down on the Affray. anyway to the the point i want to buy my dad a kit for christmas he is a shipwright by trade and has made me many models over the yaers so the skills needed are in abundance. He was talking about scratch buiding one but i wanted to buy him a kit because he will never get round to it! What are the best options on the market is there an affray kit? i didnt want to start spending loads of money maybe £200-£300 any advise will be much apprciated

John Harkness