What is the proper technique for checking for flooding in a bulkhead?

The proper technique for checking for flooding in a bulkhead involves using a metallic object to tap against the bulkhead. This method is effective because it allows the individual to listen for changes in sound that may indicate the presence of water. When tapping, if water is present, a hollow sound might be heard compared to a solid sound when the bulkhead is dry. This auditory feedback is a vital part of assessing whether flooding has occurred behind the bulkhead without relying solely on visual cues.

Using your palm to feel for dampness, while it might provide some indication of water presence, lacks the reliability and thoroughness of sound-based evaluation. Placing a bucket below would not effectively detect flooding within the bulkhead itself; it is also more suited for recovering leaking water rather than assessing the integrity and condition behind the structure. Visual inspection alone may miss signs of flooding that are not immediately visible on the surface, such as hidden leaks or the moisture build-up behind the bulkhead. Therefore, tapping with a metallic object is the most reliable method for effectively detecting flooding in this context.