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Convoy JW 51A was an Arctic convoy sent from Great Britain by the Western Allies to aid the Soviet Union during World War II. It sailed in December 1942, reaching the Soviet northern ports at the end of the month. JW 51A was not detected or attacked by German forces and arrived without loss. ==Background== JW 51A was the first of the JW/RA convoy series, replacing the previous PQ/QP series which had been suspended during the summer and autumn of 1942. The JW series were organized to sail from Loch Ewe, Scotland rather than Iceland, as previously, and sailed with a substantial destroyer escort to guard against surface attacks, as had proved effective with PQ 18. JW 51A was the first outbound Arctic convoy of the 1942–43 winter season, and began the practice of sailing smaller convoys twice-monthly during the winter months to reduce the problems of controlling large groups of ships in the gloom of the polar night. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Convoy JW 51A」の詳細全文を読む スポンサード リンク
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