Question 2630 Deck Safety

The correct answer is D) 1.9 feet. To determine the available righting arm at 18° inclination, we need to use the information provided in the Stability Data Reference Book, Section 1 (the blue pages). Given the forward and aft drafts, as well as the GM (Metacentric Height), we can use the stability curves to find the righting arm at 18° inclination. The stability curves provide the righting arm values for different GM and draft combinations at various angles of inclination. In this case, the righting arm at 18° inclination for the given drafts and GM is 1.9 feet, making option D the correct answer. The other options are incorrect because they do not match the value obtained from the Stability Data Reference Book for the provided vessel characteristics.