Passage: The Imperial Russian Navy sent out exploratory expeditions. Between 1803 and 1855, their ships undertook more than 40 circumnavigations and long-distant voyages, most of which were in support of their North Americans colonies in Russian America (Alaska) and Fort Ross in northern California, and their Pacific ports on the eastern seaboard of Siberia. These voyages produced important scientific research materials and discoveries in Pacific, Antarctic and Arctic theatres of operations.

Question: The russian navy took how many circumnavigations between 1803 and 1855?
40