Question 2295 Deck Safety

The correct answer is C) 68°. To determine the angle at which the vessel will lose positive stability, we need to use the Stability Data Reference Book, Section 1 (the blue pages). Given the KG of 25.2 feet and the drafts of 22'-03" forward and 23'-01" aft, we can use the stability curves in the reference book to find the angle at which the righting arm becomes zero, indicating the loss of positive stability. The stability curves in the reference book show that for the given KG and drafts, the angle of vanishing stability is approximately 68°. This is the angle at which the righting arm becomes zero, and the vessel will lose positive stability beyond this point. The other answer choices are incorrect because they do not match the angle of vanishing stability provided in the Stability Data Reference Book for the given vessel characteristics.