Interesting, thanks chaps.
I have:-
(1) Extract form Peterhead Harbour Navel commander diary about a seaplane arriving 25th April 1940
(2) Local press on 27th recounted the story, with a photo of the 3 people on the plane stating a North East Harbour
(3) names from photo in (2) are Olav Johansen, Stein Abildso and Johannas Storlid
The photo on the website link shows Stonehaven with F346, the translation mention Stonehaven
another press article, states the plane was there in May 1940
https://www.pressandjournal.co.uk/fp...ckdown-return/
So I think the plane originally landed in Peterhead, from Norway, before at some point arriving in Stonehaven in May 1940 for whatever reason.