The Battle of Bornholm was fought between the Swedish and Danish-Dutch fleets in May 1676 as part of the Scanian War.
The Danish-Dutch fleet was victorious, forcing the larger Swedish fleet into retreat.
Cornelis Tromp, the Dutch admiral, commanded his convoy of 16 battleships to chase the cowering Swedish navy, catching up with them near Öland where 14,000 troops attacked the Swedish forts.