What is bulwark of ship?

A bulwark is a vertical extension of the ship's hull, usually made of steel or other strong materials, that encloses the deck of the ship and provides protection from waves, wind, and other elements. Bulwarks are typically designed to be high enough to prevent water from entering the ship's deck during rough weather or storms, and they also serve as a barrier to prevent cargo or equipment from falling overboard. The height and thickness of the bulwark depend on the ship's size, type, and purpose, as well as the prevailing weather conditions in the areas where it will operate. The bulwark may also contain openings for access to the deck or for launching and recovering boats, and it may be equipped with handrails or other safety features to prevent falls or accidents.