What is the term for a boat turning on its side or completely over?

The term for a boat turning on its side or completely over is capsizing. This occurs when a vessel loses its stability due to various factors such as rough seas, improper weight distribution, or sudden movements. Capsizing is particularly dangerous as it can lead to individuals falling into the water, potentially causing injury or drowning.

In contrast, swamping refers to when water fills the boat from the top, often due to waves crashing over the sides, which can also lead to sinking but is not the same as capsizing. Docking describes the process of bringing a boat to a dock or pier to secure it, and launching involves placing a boat into the water for the first time or after storage. Understanding these terms is crucial for safe boating practices, as it highlights the importance of maintaining vessel stability and being aware of conditions that could lead to capsizing.