Purpose. This work presents the design and implementation of a modern control system for an autonomous underwater profiler intended to conduct a large series of measurements of vertical profiles of aquatic environmental parameters in an automatic mode at a moored station, and to provide wireless data transmission in quasi-real time and remote control.

Methods and Results. The following components of the tethered control system were considered: electronics, embedded software, software and hardware for data transmission and remote control, as well as end-user application software. The hardware technical characteristics were presented. The structure, functional features, and implementation details of the software components were described in detail. A specialized communication protocol providing reliable transmission of large volumes of data via cellular networks was proposed.

Conclusions. A control system for an underwater profiling probe implementing automatic modes of operation, data transmission, and user interaction has been developed. This system served as a basis for constructing an autonomous robotic platform for oceanographic sensors with a built-in winch called "Winchi". It is designed for regular measurements of vertical profiles of aquatic environmental parameters from the bottom to the water-air interface in shelf sea areas, lakes, and reservoirs. Special software and hardware tools for navigation and robust communication have been developed as part of the probe-profiler control system. For the first time in domestic practice, this made it possible to solve the problem both of remote reconfiguration of the water-column monitoring mode, including adjustment of the measurement time and depth, and modification of the composition of the information transmitted by the device depending on weather and other conditions.