117 180 175 170 - 165 - .160 - 155 - 150 - Proportionate 1 I I Increase in 0 .05 .10 .15 .20 .25 .30 Fishing Power Components Figure 14. Optimum number of vessels corresponding to maximum economic yield for increasing levels of average fishing power average fishing power per vessel increases. Figure 15 illustrates the change in standardized vessels necessary to catch MEY. The increased fishing effort, measured in terms of standardized vessels, as average fishing power per vessel increases results from the treatment of crewmen in the fishery as psuedo partners with vessel captains. As crew size and vessel size increase, only costs attribut- able to vessel size increase. Thus, the increased fishing power of vessels resulting from increasing these two factors more than offsets the increase in cost arising from fishing with larger vessels. The increase in standardized vessels is significant in magnitude. At 1975 levels of fishing power, MEY is attained with 180 vessels, or 235 stan- dardized vessels. A 25 percent increase in crew size and vessel size reduces the nominal number of vessels-necessary to catch maximum