You have 710 tons of below deck tonnage. There is no liquid mud aboard. If you have 150 tons of cargo above deck with a VCG above the deck of 3.1 feet, what is the maximum allowed VCG of the remainder of the deck cargo that is permitted? See illustration D036DG below.
• Use the D036DG loading diagram to find the maximum total deck cargo (in tons) allowed when you already have 710 tons below deck. • Remember that all deck cargo together must have a combined VCG no higher than 3.0 ft above the deck (see the loading instructions at the bottom of the sheet). • Use the combined center of gravity formula: total VCG of deck cargo is the weighted average of each parcel’s VCG.
• From the loading diagram, what is the maximum permitted total deck cargo weight corresponding to 710 tons of below‑deck tonnage? • Once you know that total permitted deck cargo, how much additional deck cargo (in tons) can you still load beyond the existing 150 tons? • If 150 tons are already at 3.1 ft, what VCG must the remaining deck cargo have so that the overall deck‑cargo VCG does not exceed 3.0 ft? Set up the weighted‑average equation and solve for the unknown VCG.
• Be sure you are reading deck cargo (vertical axis) and below‑deck tonnage (horizontal axis) correctly from D036DG. • Confirm that you are using the maximum allowed deck‑cargo VCG = 3.0 ft above deck from the instructions, not 3.1 ft. • In your weighted‑average formula, check that: (1) weights are in the same units (tons), (2) VCGs are in feet above the deck, and (3) you solve for the VCG of the remainder cargo, not the total.
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