OCEN 201 Introduction to Ocean

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OCEN 201Introduction to Ocean Coastal
Engineering

• Mooring System
• Jun Zhang
• Jun-zhang_at_tamu.edu

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• Buoy Mooring System
• Buoy types and uses
• Reading assignment (pp166-168)
• Buoys are floating or submerged objects.
• They can be cylindrical, spherical, disc, cone,
  or toroidal in shape.
• They are usually moored to anchors at the
  seafloor through steel chains, cables or
  synthetic ropes.
• They are used for measurements, mooring and
  transport oil and gas

http//www.bluewater.com/downloads/leaflet_Vopak_E
NOC_web.pdf
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• Forced on Buoys
• Using Morrison Equation for computing the forces
• Examples (Catenary Anchor Leg Mooring (CALM) )
• Moored subsurface buoy (p170)
• Static Cable Analysis (p171-173)
• Drag coefficient for 2-D and 3-D body shape
  (empirical coefficient) (p172)

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• Typical Mooring Lines
• Steel Mooring Lines Chain-Cable-Chain
• Polyester Mooring Lines Steel Chain-Polyester
  rope-Steel Chain (Taut or Semi taut)

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Integration of Mooring Lines
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y
TH
Fictitious length --- S
T0
Mud line
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TdT
T
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• How to apply the formulas
• Determining the fictitious length, etc.

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2. Formulas starting from the touch-down point
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Ex. 6.1 at pp175
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