. Deep ocean power systems. Electric power distribution; Hydroelectric power plants. neutral position of buoy Figure 8. Elevation view of one plane of a typical four-point moor. Figure 10 illustrates a three-point mooring system excursion envelope. The shaded area represents the slack rope in excess of (S - Y) that can be laid on the bottom. This slack would cause the wire rope to foul, kink, and entangle. Accordingly, the three-point moor was not considered further in the study. Forces Acting On Mooring System. The weight of the mooring system, which increases in proportion to the anchoring h
. Deep ocean power systems. Electric power distribution; Hydroelectric power plants. neutral position of buoy Figure 8. Elevation view of one plane of a typical four-point moor. Figure 10 illustrates a three-point mooring system excursion envelope. The shaded area represents the slack rope in excess of (S - Y) that can be laid on the bottom. This slack would cause the wire rope to foul, kink, and entangle. Accordingly, the three-point moor was not considered further in the study. Forces Acting On Mooring System. The weight of the mooring system, which increases in proportion to the anchoring holding power and the depth, must be supported by the surface hull. If the hull is not large enough for supporting the weight, an intermediate catenary support buoy must be used to support the weight of each mooring leg segment. The support buoys must withstand sea pressures at depths corresponding to the 60-foot wave height expected. The forces acting upon a moored surface hull are created by wind, waves, and ocean currents. Surface conditions established for the study pro- gram were 150-mph winds, 10-knot currents, and 60-foot-high breaking waves. Wind not only applies force to the hull structure above the surface but creates waves and currents as well. Model tests were conducted at the David Taylor Model Basin to estimate the force on a moored hull from wind at various velocities. These wind forces were extrapolated from the scale model to the full-size hulls used in the study. 40. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Giorgi, E. Port Hueneme, Calif. , Naval Civil Engineering Laboratory
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