Datalink was an installation found aboard ships that allowed up to 3 ships to coordinate missile salvos and Point Defense, making them much more effective than ships fighting as individuals.

Command datalink was the next generation, requiring large amounts of space for the installation, thereby necessitating special command ships such as the Mekong, allowing up to 6 ships to coordinate missile salvos and point defense, a large step up from first-generation datalink, and an advantage that the TFN ruthlessly exploited in the early years of ISW-4.