you must be joking , The Swedish Gotland class of submarine is truly impressive for its stealth , it surprised the US Navy ,so much so they leased one for a year to study .That it uses the Stirling cycle engine albeit brought upto date is even more remarkable. I have seen much of what the Moscow marine has in both Murmansk and Kaliningrad (Karalevicy) and I can say that most of it is scrap or not impressive!!!
Swedish arms are quality products, that is why Finland and Sweden co-operate in arms industry.
watch this :