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Fishing Grounds of the Gulf of Maine

Three-Dory Ridge - Outside of New Ledge and about midway between it and Harvey Blacks Ridge is a small ridge about 3 miles long, running NE. and SW., and about mile wide. This lies SE. by S. from the Portland Lightship. 38 miles to the shoal of 55 fathoms, which is near its center.

From this the ground slopes away on all sides to 63 and 65 fathom depths over which area the bottom Is made up of sand, gravel, mud, and rocks. At these lower depths are found "pipes" (clay cylinders), where the fishing ends abruptly. All about the ridge are depths of 80 to 100 fathoms on a bottom of mud.

This is almost entirely a cod ground, good from May to August.

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