Comparison of Two Seafloor Observatory Mooring Designs
The purpose of this study is to compare two seafloor observatory mooring designs. The first mooring uses a subsurface float with an “S-tether” positioned above it. The other design uses distributed buoyancy to create an S-tether in the lower half of the mooring line. The maximum tensions at the anchor and in the snubber hose, bending fatigue parameter called contact stress-slip parameter at critical locations, and the dynamic motion in the cable is monitored. The trade-offs between the two designs, and the important design parameters that affect the tensions, bending fatigue, and the dynamic motion are discussed.
KeywordsWind Velocity Current Velocity Survival Condition Dynamic Motion Maximum Tension
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