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bin boards solution to the problem of the free-surface effect




One potential solution to the problem of the free-surface effect would be to insert bin boards into fish holds. Bin boards limit both the mass of water and the distance of movement of liquid, thereby decreasing the free-surface effect. Free surface effect is measured by cubing the width of a container or hold. For example, in 
 use of bin boards to decrease free-surface effect
Figure 2

if vessel A's fish hold width is 9 feet, then the free-surface effect is 729 cubic feet (9 by 9 by 9). But when two bin boards are inserted in vessel B to create three separate fish holds, the free-surface effect for each hold is 27 cubic feet (3 by 3 by 3) and a total of 81 cubic feet for the three holds. The addition of the bin boards reduces the free-surface effect by 89% (Alaska Marine Safety Education Association [1993])


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