Minesweeper classifications did not confine these ships to one task. Canadian Bangor-class vessels performed extensive escort work, while Halcyon-class ships accompanied Arctic convoys into the approaches near Archangel. There they guarded against mines laid by German aircraft or submarines and also contributed to the convoy's anti-submarine screen. The final leg demanded both specialist sweeping and ordinary escort vigilance. Wartime small ships routinely crossed the boundary between their nominal type and the work a route required.
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Halcyons and Bangors combined sweeping with escort work
British Halcyon-class and Canadian Bangor-class vessels often served as escorts, with Arctic ships protecting the final approach against newly laid mines and submarines.