Your ship has run aground and it is necessary to determine whether or not a compartment has flooded. Therefore, you should __________.

Correct Answer: Option A — tap the bulkhead with a hammer to check for a water level

Tapping a bulkhead with a hammer is a standard maritime technique to detect liquid levels behind steel plating. A solid sound indicates the presence of liquid, while a hollow sound suggests the space is empty. This non-invasive method is safer than opening doors, which could lead to rapid, uncontrolled flooding.