On deck storage refers to the practice of stowing cargo on the open deck of a vessel during transportation. Instead of being placed inside the cargo holds or below deck, the cargo is secured and stored on the exposed deck of the ship. This method is commonly employed for certain types of cargo that do not require protection from the elements or that are too large or cumbersome to fit inside the vessel's enclosed spaces. On deck storage allows for efficient utilization of deck space and easier accessibility to the cargo during loading and unloading operations. However, it is important to ensure proper securing and protection of the cargo to prevent damage from weather conditions and ensure safe transportation.