ANTIFALLA - Ship Theory - Techniques to reduce or cancel flooding due to a breach

Good morning everyone, welcome back. The file I'm presenting this morning shortly to a fourth-year class is about antifalla. It's a very simple file, not a university-level one. I just need to explain the classic and more modern methods to reduce the effect of a breach and, in some cases, to stop the effect of a breach. It's clear, and I'll say it during the video too, if the water ingress is so much, and especially if entering that compartment risks my life, I must close the compartment and let it flood. If I can close the compartment, I can make it watertight. Otherwise, I must try to intervene on the breach from the outside. This intervention on the breach is an internal intervention, okay? We will see what plugging and shoring mean. Enjoy the video. The file is titled Antifalla. First, let's see what a breach is. A breach is a water ingress into the ship's hull that causes flooding. Obviously, there are variations in stability and trim, but breaches are divided into two types: slow flooding, if the water entering the compartment affected by the breach is less than the water I can pump out with onboard means, like bilge pumps, for example. A free-flow breach, instead, is if the water entering the compartment affected by the breach is greater than the water I can pump out with onboard means. In most cases, it's a free-flow breach. Then I should try to turn it into slow flooding. Let's look at intervention techniques. The initial intervention technique is plugging. Now I'll show a drawing, here it is. This prevents or reduces, in most cases, the water ingress. Then we move on to shoring, preventing the water from spreading to other compartments, and finally, during the shoring...