Arkhangelsk 1553; two disappeared, and one ended up in the White Sea, eventually coming across the area of Arkhangelsk. Ivan the Terrible found out about this, and brokered a trade agreement with the ship's captain, Richard Chancellor. Trade privileges were granted to English merchants in 1555, leading to the founding of the Company of Merchant Adventurers, which began sending ships annually into the estuary of the Northern Dvina. Dutch merchants also started bringing their ships into the White Sea from the 1560s. Scottish and English merchants also traded in the 16th century; however, by the 17th century it was mainly the
Onezhsky District Porog; there is regular passenger navigation. There is also limited passenger service on the Onega Bay. Onega is served by the Onega Airport which has weekly passenger flights to Arkhangelsk and to the "selo" of Purnema on the Onega Peninsula. Onezhsky District has a very high concentration of historical, archaeological, and architectural monuments. The district contains thirty-two objects classified as cultural and historical heritage by Russian Federal law, and additionally eighteen objects classified as cultural and historical heritage of local importance. Most of these are wooden churches and chapels. The monuments classified as historical and architectural heritage are the following: