Auxiliary vessels are ships that support the primary operations of a navy or maritime organization. They provide essential services such as logistics, repair, and medical support, ensuring that combat ships can operate effectively. Examples include supply ships, hospital ships, and tugboats. These vessels play a crucial role in maintaining the readiness and sustainability of naval forces. By transporting supplies, personnel, and equipment, auxiliary vessels like ocean-going tugs and amphibious assault ships enhance the overall capabilities of a fleet, allowing for extended missions and improved operational efficiency.