342. Your vessel displaces 640 tons. The existing deck cargo has center of gravity of 2.3 feet above the deck and weighs 18 tons. If you load 12 tons of ground tackle with an estimated center of gravity of 21 inches above the deck, what is the final height of the CG of the deck cargo?

Calculate the combined center of gravity of the deck cargo by converting all heights to feet (21 inches = 1.75 feet) and applying the weighted average formula: (w1*KG1 + w2*KG2)/(w1+w2), where w1 = 18 tons, KG1 = 2.3 feet, w2 = 12 tons, and KG2 = 1.75 feet. This yields a final height of 2.08 feet.