Table 1.

FAQ about UUV surveys and their supporting technologies.

S. No	Related Research Questions	Answer
RQ1	How can UUVs be used to collect data?	Depending on the mission and the sensors and instruments installed on the vehicle, UUVs can collect a variety of data such as bathymetry, water quality, imagery of the seafloor, and other types [28,31,32,36,41,42,49].
RQ2	How do UUVs navigate and control their movements in water?	To move through water, UUVs use navigation and control systems. An inertial navigation system, a GPS system, and a sonar system are a few examples [20,21,23,28,37,43,44,54,55,59].
RQ3	What are the ways in which UUVs communicate and store data?	UUVs have wireless communication systems for transmitting data and storage devices for storing data, such as hard drives or solid-state drives [6,29,31,59,65].
RQ4	How do UUVs obtain power?	Alternative energy sources such as fuel cells, batteries, and lithium-ion batteries are used to power UUVs [54,62,63,66].
RQ5	How can UUVs be equipped with payloads?	UUVs can be equipped with various payloads to perform specific tasks such as sampling, imaging, and mapping [23,28,32,44,49,54,55,59].
RQ6	What are the steps involved in planning and controlling a UUV survey?	In order to plan and control their missions, UUVs and UAVs use mission planning and control software. The software can be used for navigation, sensor control, and data analysis [23,28,37,44,49,54,55,59].
RQ7	Why should UUVs be used for surveys?	UUVs provide many advantages over traditional survey methods, such as flexibility, cost-effectiveness, and the ability to access areas that are difficult or dangerous for divers [31,32,56,62,64,65].
RQ8	How do UUV surveys present challenges?	UUV surveys can be challenging due to the need for specialized equipment and expertise, as well as the inability to operate in poorly lit or difficult-to-access underwater environments [60].