Electronic speed governors have become widespread on marine diesel engines. In comparison with hydromechanical ones, they have an additional setting parameter – input signal sensitivity. This parameter allows changing the response of governors to high-frequency disturbances. In camshaft diesel engines, such disturbances are generated when the cams run over fuels pump push rods, while in ME (MAN Energy Solutions) or RT-flex (Wärtsilä) engines they result from the use of inductive sensors with a serrated tape on the diesel shaft for speed measurement. If the engine is used as a main engine on vessels, the governor’s sensitivity additionally allows governors to vary the response to propeller shaft resistance moment fluctuations in sea waves conditions. In practice the value of sensitivity of electronic speed governors of main marine engines is selected intuitively. As a result, the adjustment of governors doesn’t provide satisfactory stability of speed modes at the change of sea conditions. The study aims to develop a methodology for adjusting the sensitivity of main engines electronic speed governors with considering the stochasticity of the load on the diesel engine in sea waves state. The study was carried out using the systems of automatic speed control model, which is based on the assumption of relatively small deviations of diesel engine shaft rotation speed and load parameters at sea waves conditions. Considering the character and magnitude of change of load on diesel engine at sea waves conditions depend on many variables of external conditions (waves levels, course of a vessel in relation to wind-wave conditions, wind gusts, vessel’s loading condition, given speed of a vessel), any set value of sensitivity of electronic speed governors appears to be optimum only for a particular case of vessel movement in sea waves state. The scientific novelty is defined by the fact that recommendations on the choice of governor sensitivity are determined with considering stochasticity of propeller shaft resistance moment fluctuations at sea waves conditions, that increased accuracy, and validity of recommendations. The practical significance of the research consist in the increase of stability of speed modes of the main engine with electronic speed governor at various sea waves conditions

As the maritime industry seeks to reduce its impact on the environment, the search for alternative fuel options is becoming increasingly important. Various fuel options are being studied, including biofuels, hydrogen, and ammonia, which are considered to be more environmentally friendly than traditional fuels extracted from the Earth's depths. The choice of fuel depends on various factors, including the size, speed, and distance of the ship, as well as the availability and cost of fuel. In the future, a combination of different fuel options may be necessary to achieve emission reduction goals. This article compares different alternative fuel types for ships, including low-sulfur fuel, LNG, electricity, methanol, hydrogen, and ammonia. Research shows that low-sulfur fuel is expensive but still cheaper than LNG, and the process of transitioning a ship to this type of fuel is relatively simple. LNG is the most expensive type of fuel and requires a complete overhaul of the ship's fuel system, which reduces its profitability. The article provides a table comparing the properties of different fuel types and concludes that methanol is likely to be the most promising alternative fuel in the near future.

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Nowadays occurs a jump in approaches to maritime technical systems developing with implementation of Industry 4.0, IIoT, Shipping 4.0 concepts. Progress in wireless technologies allows to perform absolutely new engineering tasks. Maritime branch realizes digital transformation steps, which envisage creation of unmanned, autonomous and remote controlled ships. But such systems are vulnerable for external malicious intrusion. Thus it's necessary to deepen information technologies learning in maritime education in the following directions: IIoT, industrial wired and wireless data transfer technologies and hardware; satellite systems; big data, artificial intelligence, virtual and augmented reality; remote control; cyber security technologies. National University "Odessa Maritime Academy" participates in Trainings in Automation Technologies for Ukraine project. Obtained mobile equipment allows to study PcWorx and CoDeSys software for automation systems development (based on PLCs) and Profibus, ProfiNet, EtherCAT and wireless technologies. This base equipment may be supplemented by security firewalls. Ways of modern technologies implementing in maritime branch are analyzed. Directions of deep studying are shown. Actuality and possibilities of cyber security technologies studying are highlighted. Approaches and technologies, successfully realized in education process and planned for future, are described.

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