Normal freeboard refers to the height of a ship's deck above the waterline. Sometimes, however, it may be referred to using synonyms. For example, it can be called a standard freeboard or a regular freeboard. Additionally, some may use the term average freeboard or typical freeboard to describe the same measurement. Ultimately, whatever word is used to describe the normal freeboard, it serves as an important safety feature for ocean-going vessels, ensuring that water does not enter the ship and cause it to capsize or experience other problems. By maintaining a standard or typical freeboard, ship owners and operators can ensure the safety of their crew, cargo, and vessel.