Question 2579Deck Safety70% to pass
You are on a Mariner class cargo vessel. Your drafts are: FWD 24'-00", AFT 25'-08". You wish to increase the calculated GM of 3.0' to 4.1'. What tanks should you ballast? (Use the white pages in the Stability Data Reference Book.)
AI Explanation
The correct answer is C) Tanks: DB4, DT6.
To increase the calculated GM (Metacentric Height) from 3.0' to 4.1', you need to make changes to the vessel's ballast or loading to adjust the position of the center of gravity. Based on the information provided in the Stability Data Reference Book's white pages, ballasting tanks DB4 and DT6 would be the appropriate choice to achieve the desired GM increase.
The other answer choices are incorrect because they do not provide the optimal combination of tanks to reach the target GM of 4.1'. Ballasting the tanks listed in the other options would not result in the necessary change to the vessel's stability characteristics.
Related Questions
#2577 You are on a Mariner class cargo vessel. Your drafts are: FWD 21'-04", AFT 23'-04". You wish to increase the calculated GM of 4.8' to 5.8'. What tanks should you ballast? (Use the white pages in the Stability Data Reference Book.) #2578 You are on a Mariner class cargo vessel. Your drafts are: FWD 22'-06", AFT 25'-06". You wish to increase the calculated GM of 4.8' to 5.9'. What tanks should you ballast? (Use the white pages in the Stability Data Reference Book.) #2580 The SS AMERICAN MARINER is partially loaded with a GM of 2.9 feet and drafts of: FWD 17'-10", AFT 19'-04". Use the white pages of the Stability Data Reference Book to determine what tanks you should ballast to increase the GM to 3.9 feet. #2581 The SS AMERICAN MARINER is partially loaded with a GM of 3.1 feet and drafts of: FWD 19'-06", AFT 21'-04". Use the white pages of the Stability Data Reference Book to determine what tank(s) you should ballast to increase the GM to 3.7 feet. #2582 The SS AMERICAN MARINER is partially loaded with a GM of 3.1 feet and drafts of: FWD 16'-00", AFT 18'-04". Use the white pages of the Stability Data Reference Book to determine what tank(s) you should ballast to increase the GM to 3.6 feet.