Its first efforts were unsuccessful.

The Danish fleet effectually prevented the junction of Thijssen with the Swedes, and for a time he found himself blockaded in a narrow passage called the Listerdiep.

Taking advantage of a storm which dispersed the Danes, the Dutch admiral at last was able to put to sea again, and early in July somewhat ignominiously returned to Amsterdam to refit.

For the moment King Christian was everywhere triumphant.

On July 11 he gained a signal victory over the Swedish fleet at Colberg Heath, and he had the satisfaction of seeing Torstensson compelled by the Imperialists to retreat from Jutland.