Earlier quoted context omitted.
From Wikipedia: > The Stad Ship Tunnel (Norwegian: Stad skipstunnel) is a planned canal and tunnel to bypass the Stad peninsula in Stad Municipality in Vestland county, Norway. The peninsula is one of the most exposed areas on the coast, without any outlying islands to protect it from the weather. The section has traditionally been one of the most dangerous along the coast of Norway. > The surrounding waters, known a…
"Stadhavet Sea", since havet means "the sea" (in both Swedish and (as far as I know) Norwegian), that is a terrible phrasing on English Wikipedia. It should be either just "Stadhavet" or "the Stad sea". Though, to be fair, there are a lot of places with silly names like that. From what I have heard "Sahara Desert" translates to "Desert desert" for example. I seem to remember there is even a place that translates as "…
You might be thinking of Torpenhow. It's not clear the etymology actually supports the "hill hill hill" (I thought it did). But there are enough silly names like that for a Wikipedia list:
https://en.wikipedia.org/wiki/List_of_tautological_place_nam...
Quite a few of the English ones are incidentally down to either Norse or Germanic influence. E.g. most island names ending in "-ey" (compare -øy) that has gotten "island" added, like Canvey island.