Where the seabed consists of sand or silt,...

Question 1 / 2707066636ee728f7522a1c518845

Question 1 of 2707066636ee728f7522a1c518845

Where the seabed consists of sand or silt, the most severe potential problem for an independent-leg jack-up can result from __________.

Back

Question 1 of 27070

Where the seabed consists of sand or silt, the most severe potential problem for an independent-leg jack-up can result from __________.

🔍 Key Concepts

• independent-leg jack-up rigs and how they support their weight on the seabed • behavior of sand and silt under current and wave action (erosion vs bearing capacity) • difference between installation issues (like preload/penetration) and in-service seabed change (like scour)

💭 Think About

• Think about which option describes a change in the seabed over time that could undermine the legs after the unit is already elevated and operating. • Compare which problem would most seriously affect the stability and support of the legs in loose, erodible soils like sand or silt. • Ask yourself: which of these problems is driven by water movement around the legs, rather than by how the operator initially set the unit up?

✅ Before You Answer

• Be clear on what scour physically means around a leg or pile in sandy/silty seabeds. • Distinguish between a problem that mainly affects initial setup (preloading, penetration) and one that can cause a progressive loss of support during the unit’s service life. • Verify which of the listed problems can lead to exposure or loss of lateral and vertical support at the legs in a sand/silt seabed.

Question 1 of 27070

Where the seabed consists of sand or silt, the most severe potential problem for an independent-leg jack-up can result from __________.

penetration

scour

insufficient preload

marine growth

Question 1 / 2707066636ee728f7522a1c518845

Question 1 of 2707066636ee728f7522a1c518845

Where the seabed consists of sand or silt, the most severe potential problem for an independent-leg jack-up can result from __________.

Back

Question 1 of 27070

Where the seabed consists of sand or silt, the most severe potential problem for an independent-leg jack-up can result from __________.