Question 1763Deck Safety70% to pass
Your vessel is damaged with no list, but down by the stern. There is progressive flooding and trim by the stern is increasing. What is the effect on transverse stability after the deck edge at the stern is submerged?
AI Explanation
The correct answer is A) BM decreases from loss of water plane and greater volume.
As the vessel takes on water and the deck edge at the stern becomes submerged, the waterplane area and moment of inertia of the waterplane (BM) will decrease. This is because the added volume of water on deck increases the vessel's displacement, but the waterplane area remains the same or decreases. Since BM is a function of the waterplane, its value will decrease, which in turn reduces the vessel's transverse stability.
The other options are incorrect because: B) There is an effect on transverse stability due to the loss of waterplane; C) KG increases from the added weight of water on deck, but this does not directly affect transverse stability; and D) KB increases, but BM decreases, so GM (the stability index) will actually decrease.
Related Questions
#1761 Your vessel has been holed in #1 hold and partially flooded. The hole is plugged against further flooding. In calculating the effect of the flooding on your transverse stability, you should use which method? #1762 A vessel is described as a two compartment vessel when it _______________.#1764 A continual worsening of the list or trim indicates _______________.#1765 Your vessel is damaged, listing to port and on occasion flopping to the same angle to starboard. It has a long, slow, sluggish roll around the angle of list. There is excessive trim by the stern with little freeboard aft. What action should you take FIRST to correct this situation? #1766 Your vessel is damaged and is listing to port. The rolling period is short. There is sufficient freeboard so that deck edge submersion is not a problem. What corrective action should be taken FIRST in regard to the vessel's stability?