Problems of Navigational Aids for Autonomous Unmanned Submarine Vehicles and Possible Ways of their Solution. P. I. Maleyev. Navigation and Hydrography. 2015. No. 39. . 711.

The tasks carried out by the autonomous unmanned submarine vehicles, the navigational aids required for them, the difficulties of employment of the existing ship analogs of these aids and the possible ways of their overcoming are considered.

Key words: Autonomous unmanned submarine vehicles, inertial navigation systems, logs, gyroscopes, hydroacoustic navigational aids, satellite navigation systems.

Method of Selection of the Optimum Cost-Effective and Quality System for Heading Indication and the Marine Objects Stabilization. S. A. Yaroshenko Navigation and Hydrography. 2015. No. 39. . 1216.

The method of selection of the optimum cost-effective and quality system for heading indication and the marine objects stabilization and its applications are considered. It was established that is the preferable heading indication and stabilization system for the users.

Key words: Technical characteristics (specifications), cost, user, heading indication and stabilization system, quality index, category, weight, evaluation.

Substantiation Method for High-accuracy Autonomous Navigation Requirements to Digital Model of the Earth's Gravitational Field. E. S. Zubchenko. Navigation and Hydrography. 2015. No. 39. . 1624.

The method of requirements substantiation to digital model of the Earth's gravitational field for provision of high-accuracy autonomous navigation is considered. The method is based on the use of spectral densities of model and transfer function of inertial navigation system for calculation of root-mean-square error in determining the position co-ordinates by the navigation complex depending on the duration of autonomous navigation. Results of modelling the error for various values of field model parameters confirming the possibility of obtaining the practical results of evaluation are presented.

Key words: Digital model of the Earth's gravitational field, function of spectral densities of residual anomalies of gravitational field, function of spectral density of model, inertial navigation system, transfer function of navigation complex, error of calculation of position co-ordinates.

Modelling the Scenarios of Collision of Icebergs with the Offshore Oil and Gas Production Complexes. O.A. Gasnikov, K. G. Stavrov, A. S. Bolshev, K. N. Shkhinek. Navigation and Hydrography. 2015. No. 39. . 2532.

Development of oil and gas fields of the Arctic seas of the Russian Federation is the most complex scientific, technical and organizational-economic problem; it belongs to dangerous kinds of economic activities. Presence of icebergs in water areas of sea deposits generates the special risks caused by possibility of collision of an iceberg with objects of arrangement. The results of computer simulation scenarios of icebergs interaction with offshore production platforms are presented. Risks of such interactions are estimated. It is shown that the proposed technology for probabilistic analysis of dynamic models can significantly reduce the degree of uncertainty in the assessment of the danger of icebergs in the design of offshore structures.

Key words: Oil and gas field, the Arctic region, management of ice situation, iceberg, offshore production platforms.

Results of Complex Marine Explorations (in 2014) with the Aim to Define More Exactly the Parameters of the Outer Limits of the Russian Federation Continental Shelf in the Arctic Ocean. S. M. Zarubin. Navigation and Hydrography. 2015. No. 39. . 3341.

The results of additional bathymetric and gravimetric explorations as well as the navigational support for the seismic reconnaissance in the framework of the RF Application being prepared for increased continental shelf in the Arctic Ocean are presented.

Key words: Hydrographic and geophysical explorations, the Arctic, bathymetric survey, gravimetric survey.

Tides and Seiches. How to Differentiate between Them? Y. N. Zhukov. Navigation and Hydrography. 2015. No. 39. . 4247.

The main qualities of the spatial distribution of phases for tides and seiches are presented. Based on these qualities the definitions of tides and seiches are given. The characteristic properties of tides and seiches are given. The criteria for differentiating the tides from the seiches are presented.

Key words: Tides, seiches, definitions.

Logical Specific Features of Mathematical Models in Hydrometeorology. Y. N. Zhukov. Navigation and Hydrography. 2015. No. 39. . 4852.

The logical specific features that are the basis of development of probabilistic and hydrodynamic models in hydrometeorology are considered. Special attention is paid to the procedure of explication the logical bases of transition from inductive to deductive notions.

Key words: Logic, hydrometeorology, explication.

Status and Prospects of Development for Software and Hardware of the Subsystem Used to Collect, Process, Transfer and Store the Hydrometeorological Information in the Navy. A. E. Drozdov, N. N. Zhiltsov, V. P. Sviridov. Navigation and Hydrography. 2015. No. 39. . 5358.

Status and prospects of development for software and hardware of the subsystem used to collect, process, transfer and store the hydrometeorological information are considered. The necessity to develop the similar up-to-date military-purpose software-hardware complex is substantiated.

Key words: Hydrometeorological support, hydrometeorological information, Unified System of Information on the World Ocean State, information-measurement system, information resources, software and lardware.