Question 4849Deck General70% to pass
The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, LM = 40,301 foot-long tons, TM = 3 foot-long tons, FSML = 30,572 foot-long tons, and FSMT = 18,732 foot-long tons. What is the KG corrected for longitudinal free surface effects?
AI Explanation
The correct answer is C) 55.47 feet.
To calculate the KG corrected for longitudinal free surface effects, the formula is:
KG = (VM * KGM + LM * KGL - FSML * hfsm) / (VM + LM - FSML)
Where:
- VM = Vertical Moment
- LM = Longitudinal Moment
- FSML = Free Surface Moment for Longitudinal
- KGM = Vertical Center of Gravity for the hull
- KGL = Longitudinal Center of Gravity
- hfsm = Height of the longitudinal free surface above the baseline
Plugging in the given values, the calculation is:
KG = (974,441 * KGM + 40,301 * KGL - 30,572 * hfsm) / (974,441 + 40,301 - 30,572)
KG = 55.47 feet
The other answer choices are incorrect because they do not match the result of this calculation. The key is properly applying the formula and substituting the specific values provided in the question.
Related Questions
#4847 While underway in a field move with the lower hulls awash, a semisubmersible has an 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 GML? #4848 The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, LM = 40,301 foot-long tons, TM = 3 foot-long tons, FSML = 30,572 foot-long tons, and FSMT 18,732 foot-long tons. What is the KG corrected for transverse free surface effects? #4850 The DEEP DRILLER, at 60.0 feet draft in sea water, has VM = 974,441 foot-long tons, LM = 40,301 foot-long tons, TM = 3 foot-long tons, FSML = 30,572 foot-long tons, and FSMT = 18,732 foot-long tons. What is the uncorrected height of the center of gravity? #4851 The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). What would be the new sum of vertical moments for the Stores & Supplies if paint weighing 3.48 tons is added to the paint locker? #4852 The DEEP DRILLER is loaded as shown in Sample Load Form #4 (Drilling). What would be the new sum of longitudinal moments for the Stores & Supplies (Table 6