Hej Thor,
I Googled on Harry Brandelius and found the song you mentioned. Here it is.
http://www.last.fm/music/Harry+Brandeli ... Y_wGZ2j6ks
Listening carefully I think he tells us that he has bought a ‘filikoster’. A ‘Koster’ as far as I know, is a type of boat.
http://www.woodenboatrescue.org/KOSTER.htm
I telephoned my mother (102 years old) who once lived on Kärringön asking what type of a Koster this may have been but she could not help. She liked listening to the song, though.
I am leaving the subject a small bit now but in the apartment next to my mother’s lives a retired fisherman who, in his active days, was a fisherman and lived on Kärringön. He is, like most retired sailors, full of stories and he told me not long ago that during the war they were not allowed to enter the harbour after dark. ‘So we had to spend the night on deck’ he said, ‘where we cooked and enjoyed lobsters flushed down with a beer or two’. A fisherman’s life is hard.