Question 1721 Deck Safety

The correct answer is A) filling completely. The wooden plug fitted tightly in the vent of a damaged tank would prevent the tank from filling completely. This is because the plug blocks the vent, which is necessary to allow air to escape as the tank fills with liquid. Without a proper vent, the tank will not be able to fill up completely, as the air inside cannot be displaced. The other answer choices are incorrect because: B) the plug would not prevent the tank from collapsing, C) the plug would not affect the development of free surface moments, and D) the plug would not prevent the development of free surfaces within the tank.