I played GDW Narvik a few times, long ago, and enjoyed it, but it doesn’t include the naval campaign. Quarterdeck Games designed their Norway 1940 naval game to be played stand-alone, or to be mated with Narvik to provide that game with a naval dimension. I bought Norway 1940 with that use in mind, but I never set it up on the table, let alone played it in tandem with Narvik, so I can’t vouch how that would work. I sold my copy of Norway 1940, so that’s all I can share with you. Good luck scratching this gaming itch.