A Submarine Tender is a type of support ship designed to assist submarines during their operations. These vessels provide essential services such as maintenance, resupply, and logistical support, ensuring that submarines can remain operational for extended periods. They are equipped with facilities for repairs, storage for supplies, and sometimes even accommodations for crew members. Typically, a submarine tender operates close to a submarine base or in areas where submarines are deployed. They play a crucial role in naval operations, allowing submarines like the Los Angeles-class or Virginia-class to remain effective while minimizing their time spent in port.