While underway in a field move with the...

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Question 1 of 2066636ee728f7522a1c518df3

While underway in a field move with the lower hulls awash, a semisubmersible has a maximum allowable KG of 63.69 feet; KMT is 65.12 and KML is 64.92. The KGT is 56.13 and KGL is 55.89. What is the margin on the maximum allowable KG?

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Question 1 of 20

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🔍 Key Concepts

• KG (height of center of gravity) vs KM (metacentric height above keel) and how they relate to GM • Meaning of maximum allowable KG versus actual KG values (KGT and KGL) • Why you take the most conservative (worst-case) KG when more than one KG is given

💭 Think About

• What does “margin on the maximum allowable KG” represent in simple numerical terms? Think about whether it’s a difference between two values, a sum, or something else. • You are given both KGT and KGL. Which one represents the less favorable (more critical) stability condition, and why would that be used when checking against a maximum allowable KG? • Once you’ve chosen the appropriate actual KG to compare with the maximum allowable KG, what single arithmetic operation do you perform to get the margin?

✅ Before You Answer

• Identify clearly which value is the maximum allowable KG and which values are actual KG measures. • Decide which of the given actual KGs (KGT or KGL) gives the smaller safety margin and use that one for your comparison. • After computing your margin, check that the units are feet and that your result matches one of the multiple‑choice options.

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