It operated in the area of the North Sea Mine Barrage.

Auk assisted in sweeping the North Sea Mine Barrage in 1919.

Fitted out with "electrical protective devices", she was soon busy in the post-war clearing of the North Sea Mine Barrage.

After the Armistice, Unit 20 took part in operations to clear the North Sea Mine Barrage through the end of September 1919.

By that time the necessity of improving sweeping methods to expedite the clearing of the North Sea Mine Barrage had become very apparent.

Assigned to the North Sea mine barrage, the minesweeper removed 2,160 mines from British waters between June and September 1919.

From 30 June to 2 July, Texas and her colleagues acted as escort for American minelayers adding to the North Sea mine barrage.

The North Sea Mine Barrage was intended to close this alternative route, and it also made it hard for the U-boats to get supplies.

Auk remained there for over a month, undergoing repairs and fitting out for her pending duty sweeping the North Sea Mine Barrage.

The Navy's intent to lay the North Sea Mine Barrage to protect commercial shipping required an Atlantic Seaboard plant.

A chronicler of the North Sea Mine Barrage clearance wrote about 9 July: "...misfortune did not rain; it poured".

Upon completion of fitting out, she sailed for Scotland on 6 April 1919, to assist in the sweeping of the North Sea Mine Barrage.

In 1919, Belknap received the Distinguished Service Medal for his achievements in the North Sea Mine Barrage effort the previous year.

In an attempt to seal up the northern exits of the North Sea, the Allies developed the North Sea Mine Barrage.

In 1915 Bacon was appointed to command the Dover Patrol and was involved in the development of the North Sea Mine Barrage.

Kiowa returned to Norfolk during April 1918 to load naval mines and minelaying equipment for the squadron engaged in laying the North Sea Mine Barrage.

Swallow swept mines from the North Sea Mine Barrage laid by the Allied and Associated Powers during World War I.

By 1 October, the North Sea Mine Barrage, originally a concentration of over 70,000 British and American mines, had been swept; and Sanderling headed home.

In the words of British Rear Admiral Lewis Clinton-Baker, the North Sea mine barrage was the "biggest mine planting stunt in the world's history."

Rear Admiral Reginald R. Belknap - Commander of the North Sea Mine Barrage in First World War.

In 1919, Submarine Chaser No. 37 participated in North Sea minesweeping operations to clear the North Sea Mine Barrage.

In World War I, the United States Navy had a base at Corpach as part of the laying of the North Sea Mine Barrage.

Along with American subchasers, chartered British naval trawlers, and fellow Lapwing-class sweepers, Flamingo would participate in the clearing of the North Sea Mine Barrage.

During World War I, he served aboard the USS Jarvis' at Queenstown, then had duty assembling mines for the North Sea Mine Barrage.

San Francisco joined the Allied effort of creating the North Sea Mine Barrage across the North Sea to restrict German submarine traffic into the Atlantic by: