I was pretty surprised at the 17 knots in a fjord.
That I think is why there were American officers as well on the bridge at the time of the incident as part of cross training.
Which is then disheartening to hear the Maltese registered, Greek owned tankship speak Norwegian, not English, at the time of crisis, and than then same from the onshore vessel traffic service.
Also, you can travel along a huge chunk of the coast of Norway avoiding open seas by being in "fjords", though mostly they are not real fjords just sounds between islands etc.