During hull patching at sea, what is the key consideration to stop progressive flooding?

During hull patching at sea, what is the key consideration to stop progressive flooding?

• A. Stop the water flow into the hole.
• B. Vent the space to atmosphere.
• C. Increase on-board pressure to push water out.
• D. Remove all crew from the ship.

Answer: (A)

The main thing to do during hull patching at sea is stop water from entering through the breach. Sealing the hole with a patch creates a watertight cover so the inflow ceases, giving you time to finish the repair and dewater the compartments. Venting the space to the atmosphere doesn’t reduce the actual entry of seawater; it may affect internal air but won’t stop the leak. Increasing onboard pressure to push water out isn’t effective because external seawater pressure at the breach will still push water in, and you can’t maintain enough internal pressure to overcome that. Removing all crew doesn’t address the breach itself and doesn’t stop the flooding.

The main thing to do during hull patching at sea is stop water from entering through the breach. Sealing the hole with a patch creates a watertight cover so the inflow ceases, giving you time to finish the repair and dewater the compartments.

Venting the space to the atmosphere doesn’t reduce the actual entry of seawater; it may affect internal air but won’t stop the leak. Increasing onboard pressure to push water out isn’t effective because external seawater pressure at the breach will still push water in, and you can’t maintain enough internal pressure to overcome that. Removing all crew doesn’t address the breach itself and doesn’t stop the flooding.