Early career
As a junior lieutenant, Fisker saw service in the British navy from 1739 to 1742, and again as a senior lieutenant from 1744 to 1746. In 1753, as captain of the armed merchant ship ''Friderich og Lovise'', he was sent to reinforce the Danish squadron off Morocco and at the same time carry the diplomat Andreas Æreboe to the area. From service in the West Indies as captain of the frigate ''Docquen'' in 1755 - 1756, he then took the ship-of-the-line ''Neptunus'' to the Mediterranean and Constantinople.1761
In 1761 he was again in the Mediterranean, this time with ship-of-the-line '' Grønland'' including a team of scientists on board. (His 9-year-old sonLater career
In 1766, while captain of the ship-of-the-line Prins Friderich he was adjutant to the head of the Danish navy. 1770 he was at the Admiralty college, and in 1773 he was in overall command of the flotilla which carried Prince Carl of Hessen and Princess Louise to Norway, where Fisker was the most senior naval officer. From 1775 to 1780 he was commanding officer of Frederiksværn naval dockyard (modern day Stavern) and of the Norwegian flotilla. On return to Denmark, Fisker was engaged in several important commissions, including that concerning the introduction of gunboats for near coastal defence, as well as being chairman of that covering the Norwegian flotilla. He also served as presiding officer over a number of courts martialReferences
Citations
* (accessed 2019) * (Danish-Norwegian Naval Officers) Two volumes. Downloadable a