A floating jack-up with displacement of 15,000 kips... - USCG Deck General

A floating jack-up with displacement of 15,000 kips has its LCG 108 feet aft of frame zero (AFO). If 400 kips are loaded at 120 feet AFO and 800 kips are loaded 150 feet AF0, what is the new LCG?

A 100.0 feet

B 109.2 feet

C 110.4 feet

D 119.2 feet

AI Explanation

The correct answer is C) 110.4 feet. To calculate the new LCG, we need to use the formula: (Initial LCG * Initial Displacement + Load 1 * Load 1 Position + Load 2 * Load 2 Position) / (Initial Displacement + Load 1 + Load 2). Given: - Initial Displacement: 15,000 kips - Initial LCG: 108 feet AFO - Load 1: 400 kips at 120 feet AFO - Load 2: 800 kips at 150 feet AFO Plugging these values into the formula: New LCG = (15,000 * 108 + 400 * 120 + 800 * 150) / (15,000 + 400 + 800) New LCG = 110.4 feet AFO The other options are incorrect because they do not match the calculated result of 110.4 feet.

Want to practice with timed exams?

Download Coast Guard Exams for the full exam experience with progress tracking.

Get the App

Question 5008 Deck General

A floating jack-up with displacement of 15,000 kips has its LCG 108 feet aft of frame zero (AFO). If 400 kips are loaded at 120 feet AFO and 800 kips are loaded 150 feet AF0, what is the new LCG?

Want to practice with timed exams?