Question 1141 Deck General

The correct answer is A) slack. A tank that is in a slack condition, meaning it is not completely full or completely empty, is dangerous to the stability of a vessel. This is because the liquid in a slack tank can shift and move, causing the vessel's center of gravity to change rapidly and unexpectedly, which can lead to instability and potentially capsizing. The other options are incorrect because a tank that is completely empty or completely full does not pose the same risk to stability, as the liquid is either not present or is secured in place, respectively. A tank that is low in the vessel is also less likely to affect stability significantly compared to a slack tank.