Otter-trawl fisheryLetter from the secretary of commerce transmitting communication from the commissioner of fisheries, submitting a report on the otter trawl fishery, in compliance with items in the sundry civil appropriation acts approved August 24, 1912, and June 23, 1913 .. . this decrease was numericallygreatest prior to 1909, when there was but one steam trawler inservice. The falling off in the totals was, therefore, to some extentdue to a reduction of fishing activity by the Gloucester vessels, andto eliminate this variable we have reduced the catch to a basis of(juantity per trip and
Otter-trawl fisheryLetter from the secretary of commerce transmitting communication from the commissioner of fisheries, submitting a report on the otter trawl fishery, in compliance with items in the sundry civil appropriation acts approved August 24, 1912, and June 23, 1913 .. . this decrease was numericallygreatest prior to 1909, when there was but one steam trawler inservice. The falling off in the totals was, therefore, to some extentdue to a reduction of fishing activity by the Gloucester vessels, andto eliminate this variable we have reduced the catch to a basis of(juantity per trip and have found that the catch per trip of cod,haddock, and hake combined was greater in 1914 than in any yearsince 1905 at least and of haddock was about equal to that of 1906and much greater than for any other year of the period catch of cod per trip was greater in 1914 than during four ofthe preceding nine years. The average catch per trip of cod andhaddock each, and of these two combined with the hake, was greaterfor the five years 1910 to 1914, inclusive, than it was for the preced-ing five-year period. 42 ol III: IKAWL FISHERY. We find, therefore, that there is no statistical support for theclaim thai the haddock, or any other demersal fish on Georges, has. Diagram showing the total combined catch of cod, haddock, and hake, in hundredweights,average catch per trip in pounds, and number of trips made by Gloucester line fisher-men on Georges Bank. The heavy horizontal lines show the average catch for five-yearperiods. shown signs of overfishing since the first use of the steam trawler in lit). OTTER-TRAWL FISHERY. 43 The increase in the catch of haddock per voyage of liners in 1914can net be ascribed to an increased catch of scrod, for very few ofthe latter were taken, and the data show that very few are taken byliners even when the small fish are present in large numbers and aretaken by the trawlers on the same ground. An examination of the 1 1 1 I 1 | | 1 1 1
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