Question 290Safety & Environmental - 1st Asst/Chief

The correct answer is D) have no effect on the trim. For a vessel with a block coefficient of 1, which indicates a perfectly rectangular hull shape, the addition of weight at the center of flotation will not affect the trim of the vessel. This is because the center of flotation is the point around which the vessel trims, and adding weight at this location does not create a trimming moment. The vessel will simply sink deeper in the water without changing its fore-and-aft attitude. The other options are incorrect because they describe changes to the vessel's draft and stability, which are not affected by adding weight at the center of flotation for a vessel with a block coefficient of 1.