Underwater assets are often costly items. For example, in oceanographic applications, several expensive instruments are deployed in a single package. Similarly in oil and gas applications, numerous instrumentation and other mobile devices such as ROVs, AUVs are used routinely.
If these assets malfunction or are lost, the cost impact comes not only from the high cost of the assets but also the steep labour and logistics costs related to deploying a new asset and the expensive delays to operations. Thus, the ability to monitor and locate these packages is important, so that the integrity of the package can be assured and the location can be tracked for later retrieval if required.