The navy suffered several severe setbacks during the 1620s. In 1625, a squadron cruising in the Bay of Riga was caught in a storm and ten ships ran aground and were wrecked. In the Battle of Oliwa in 1627, a Swedish squadron was outmaneuvered and defeated by a Polish force and two large ships were lost. "Tigern" ("The Tiger"), which was the Swedish admiral's flagship, was captured by the Poles, and "Solen" ("The Sun") was blown up by her own crew when it was boarded and nearly captured. In 1628, three more large ships were lost in less than a month. Admiral Klas Fleming's flagship "Kristina" was wrecked in a storm in the Gulf of Danzig, "Riksnyckeln" ("Key of the Realm") ran aground at Viksten in the southern archipelago of Stockholm and "Vasa" foundered on her maiden voyage.