What is the purpose of patching around a round hull hole in damage control?

• A. To channel water away
• B. To permanently seal a hole with welding
• C. To stop water ingress temporarily using a circular canvas patch or patch plate with sealant
• D. To mark the hole

Answer: (C)

When a hole opens in the hull, the immediate goal is to stop water from flooding in as quickly as possible. Patching around the hole with a circular canvas patch or a patch plate and sealant provides a temporary, watertight seal that can be applied quickly and without welding. This approach buys time to control flooding, stabilize the ship, and plan a more permanent repair or towing/drydock work. The circular shapes are practical because they seal evenly around the edge and are easy to apply with the available patching materials.

Other options don’t fit the situation: channeling water away doesn’t stop the ingress and can worsen flooding; a permanent weld isn’t practical as a rapid emergency fix and may be unsafe or impractical in damaged conditions; marking the hole doesn’t address the leak at all.