What is the name of the vertical inclined set of steps on a ship?

The term "ladder" specifically refers to a vertical inclined set of steps on a ship, which is designed to facilitate access between different levels or decks. Unlike a stairway, which is generally constructed with a more gradual slope and wider steps, a ladder is steeper and consists of rungs or narrow steps that allow crew and passengers to ascend or descend efficiently.

This design is particularly important in the maritime context, as space on a vessel is often limited, requiring a more compact and vertical solution for movement between levels. The construction of a ladder typically serves both safety and space optimization purposes, making it an essential feature on ships. Additionally, ladders are often equipped with handrails for added safety, especially in the sometimes challenging conditions at sea.