Mother ships are often used to describe the larger vessels that transport smaller ships or aircrafts. However, there are other synonyms that can be used to describe this type of ship. One option is a "carrier ship," as it carries smaller crafts like a carrier carries planes. Another choice is a "command ship," which refers to a vessel that is responsible for coordinating and leading a group of smaller crafts. "Flagship" is another synonym for mother ship, as it represents the ship that displays a particular nation's flag and leads a fleet into battle or on a diplomatic mission. In summary, there are several synonyms for "mother ship," and each term accurately describes the essential role that these ships play in transportation and leadership.