Royal Danish Navy
From 1509 to 1814, when Denmark was in a union with Norway, the Danish Navy was part of the Dano-Norwegian Navy.  It was an important force then. It played an important part in the colonisation of Africa and the Caribbean. During the Napoleonic Wars the British were afraid that the Danish navy would be used against them.  They attacked it in 1801 and  captured it in 1807.  It took a long time to rebuild the navy.