Trinity Bay, Newfoundland survey - September 1956 / W.B. Bailey. : Fs97-27/10E-PDF

"Trinity Bay cuts deeply into the eastern coast of Newfoundland and, together with Placentia Bay, nearly severs the Avalon Peninsula from the rest of the Island. Trinity Bay has an overall length of some 50 miles, and for the most of its length, has an unusually uniform width of between eleven and twelve miles. It then widens near the mouth to 22 miles and narrows again to 15 miles at the mouth. Depths within the Bay reach a maximum of 565 metres in a deep narrow trough in the central portion. The maximum depth across the mouth is nearly 310 metres. As indicated in Figure 1, an offshore ridge separates the deeps within the Bay from those on the edge of the Continental shelf. The maximum or sill depth of this ridge is about 236 metres and is found in the area about 25 miles northeast of the mouth of the Bay. The crown of the sill is indicated by the heavy dashed line"--Introduction, page [1].

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