Question 2245Deck Safety70% to pass
A vessel has a maximum allowable draft of 28 feet in salt water and a fresh water allowance of 8 inches. At the loading berth, the water density is 1.011. To what draft can she load in order to be at her marks when she reaches the sea? (The salt water density is 1.025.)
AI Explanation
The correct answer is D) 28' 04.5".
The reasoning is as follows:
1) The vessel has a maximum allowable draft of 28 feet in salt water.
2) The fresh water allowance is 8 inches, which means the vessel can load to a draft 8 inches deeper in fresh water compared to salt water.
3) At the loading berth, the water density is 1.011, which is lower than the salt water density of 1.025.
4) To calculate the draft in salt water that would result in the vessel being at its marks when it reaches the sea, you need to take into account the difference in water density. The correct calculation is 28 feet + (8 inches / (1.025 - 1.011)) = 28 feet 4.5 inches.
The other answer choices are incorrect because they do not properly account for the fresh water allowance and the difference in water density.
Related Questions
#2243 Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle for permanent list if the KG is 22.4 feet and the drafts are: FWD 15'-03", AFT 15'-09". #2244 Using the information in Section 1, the blue pages, of the Stability Data Reference Book, determine the danger angle for permanent list if the KG is 25.0 feet and the drafts are: FWD 15'-04", AFT 15'-08". #2246 Your vessel is floating in water of density 1.010. The fresh water allowance is 8 inches. How far below her marks may she be loaded so as to float at her mark in saltwater of density 1.025? #2247 A tanker loads at a terminal within the tropical zone. She will enter the summer zone five days after departing the loading port. She will burn off about 45 tons/day and daily water consumption is 8 tons. How many tons may she load over that allowed by her summer load line? #2248 A tanker loads at a terminal within the tropical zone. She will enter the summer zone six days after departing the loading port. She will burn off 45 tons/day and daily water consumption is 8 tons. How many tons may she load over that allowed by her summer load line?