On the basis of the use of hydrodynamic equations to incompressible liquid, reduced to non-dimensional form within the framework of similarity law, probabilistic structure of the field is constructed and researched as the basis of the decision of the problem of the non-dimensional parameter estimation of the flow, created by moving outside source, as well as for estimation of the source proper parameters and parameters of the statistical field propagation channel. The analytical form of the likelihood ratio is found and algorithms of the unknown information parameter estimation as the object of the statistical inverse problem solving are formed.

Approximate expressions of hydrodynamic forces were used to develop a mathematical model of the flat rigid wing with different shape and aspect ratio varying pitch-axes location and sufficiently large heaving and pitching amplitudes. A peculiarity of this model is the usage of the first–order aerodynamic derivatives coefficients and kinematic parameters. Formulas for the calculation of the thrust and efficiency were derived. The results of calculations are in good agreement with numerical solutions.

Theoretical bases of essential seaworthiness increase and reduction of high-speed boats onboard rolling by application of wave loadings neutralizers are stated; wave loadings being the prime reason of rolling. It was proved experimentally that the most effective type of wave loadings neutralizer is wing profile lattices attached to the stern part of high-speed boats and that increased the attached weight – 2 times, and damping – 10 times. Comparative tests of the forced rolling of boats models in a seakeeping basin were conducted. They have confirmed high efficiency of the neutralizers in decreasing of boat onboard rolling. The structure of the left and right members of equation of boats onboard rolling with application of neutralizers is specified and their high efficiency in comparison with its traditional methods of rolling lessening was explained.

Hydroacoustic data processing is being performed in time or spectral domain, the spectral domain processing is wider spread. In any case, antenna devices beamforming and input signals processing algorithms modeling must be performed. There are two possible approaches to the algorithms working out. The first is to process the signals on the outputs of the antenna channels and then calculate and simulate signals and noise on the antenna channels outputs in accordance with the calculated beam pattern of the channels and given source distribution and signals and noise parameters. The second is to generate signals and noise in the array elements, obtaining processes with the properties given on the item level on the channel outputs, and the total signal processing in time domain. The formulas of signals and noise for mobile underwater robot antenna are cited.

Polar marine research is a key to understanding of processes of the sea ecosystem and the Earth climate change. They are also of a great economic and defense importance. However, vast ice covers and ice thickness make it difficult to carry out research in such regions. Autonomous underwater vehicles (AUVs) are able to provide essential help in conducting this research. The paper deals with: the overview of development, role and technical capabilities of AUVs, used for marine research in ice environments.