A submarine tender is a specialized support ship designed to assist submarines while they are in port or at sea. These vessels provide essential services such as maintenance, repair, and resupply of fuel, food, and other necessary supplies. They play a crucial role in ensuring that submarines remain operational and ready for deployment. In addition to logistical support, submarine tenders often have facilities for crew accommodations and training. They may also carry equipment for diving operations and other specialized tasks. By serving as a floating base, submarine tenders enhance the effectiveness and endurance of submarine operations.