In the meantime, on 30 March, the Danish fleet formed the North Sea Squadron, which at the time consisted of the steam frigate and the steam corvettes and , commanded by Commodore Edouard Suenson. On 6 May, the frigate relieved "Dagmar", allowing her to be transferred to the Baltic Sea. By this time, the Danish squadron had captured fifteen German prizes, along with four blockade runners from neutral countries. Additionally, the ports of Hamburg and Bremen were effectively closed to traffic.