A submarine base is a military facility that houses and supports submarines and their crews. The term 'submarine base' can also refer to the area of water in which submarines operate. The two crossword solutions for the term 'submarine base' are SALAMI (6 letters) and DELI (4 letters). SALAMI is a type of cured sausage made from beef, pork, or a combination of the two, while DELI is a store or restaurant that specializes in prepared foods such as sandwiches, salads, and soups.