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Esso Norway Tests— (Continued from page 14) Structural response caused by pressure sys- tems on tank boundaries must be compared to a condition with zero pressure on tank boundaries in order to get absolute values. This meant that, under conditions of zero trim, the internal pressures on the boundaries of tank groups Nos. 2, 3, and 4 (except for the forward boundary of No. 2 and the after boundary of No. 4) must be matched by the external pres- sures governed by the draft. Expressed other- wise, this meant that the height of water bal- last in all tanks in groups
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® CENTER-TANK No. 2 92 0T.-BHD SWASH-BHD Figure 4—Strain gage station on center girder. February 1, 1974 17
