... sensitive the uncertainty is to transmission from the frequency response function to the ship efficiency. consumption simulation short-term prediction increase decrease resistance wavelength region energy consumption ship speed marine transportation fuel consumption performance simulation...

.... Conveying system, composed of slurry pump(s), pipeline, supporting and auxiliary devices, is one of the key and main energy consumption components of hydraulic dredger, performing the function of suction and discharge of dredged material. Its working performance is the key factor for construction efficiency...

... part of this paper compares the resistance calculation results of the first two parts, verifies the drag reduction effect of the multi-ship formation, and briefly analyzes the reasons. INTRODUCTION For the shipping industry, reducing the energy consumption of ships has always been a hot research...

... sustainable development controller energy consumption auv sustainability social responsibility rudder auv simulation composite curve control method x-rudder auv artificial intelligence trajectory rudder allocator disturbance tracking vehicle rudder error weight coefficient...

..., environmental dredging and other projects. The conveying system, composed of slurry pumps and their driving system, pipelines and auxiliary devices, is the core equipment to transport dredged soil. Its operation performance is the key factor determining construction efficiency and energy consumption of CSDs...

... capacity of the required heat producing generator. The various methods, that can be used to reduce the energy consumption costs are described, such as: scheduling of the vessels traffic, change of the vessel movement scheme, optimization of the location of the bubbling lines and discharge points...

.... The results show specific properties of dredger conveying system: there is an optimal working point for conveying system for each pump speed(s) under certain operation conditions, characterized by the maximum production and the minimum energy consumption; there is a perfect pump speed when conveying capacity...

... navigation path with the least energy consumption. INTRODUCTION Autonomous Underwater Robot (AUV) is a new type of underwater carrying platform with autonomous navigation capabilities. In recent years, with the advancement of science and technology, AUV has gradually developed from small scale to large...

... problem of thrust allocation, and is able to adjust the biasing adaptively to generate zero thrust and reduce the energy consumption of the thruster. Simulation and model test results show that the algorithm is suitable for the above conditions, which can solve the problem that the propeller...

... conditions. The energy consumption was used as the switching indicator. The allocation modes of fixed angle and variable angle were designed. However, the method has a single switching indicator and does not consider the characteristics of control force. It cannot effectively reflect the actual environmental...

... and process conditions. Therefore, it is difficult to compare processes based on only their efficiencies such as production yields, energy consumptions, etc. To evaluate the processes, the criteria for NGL extraction processes and their application to FLNG are suggested. The weighting factors...

... an energy consumption of 10 J for the two actions of the three-way valve. The regressions shown in Fig. 10 enable us to calculate the energy consumption per 50 cm3 of oil ejection at any pressure, which is shown in green in Fig. 11b. Energy Budget Next, we estimate the buoyancy that the engine of Deep NINJA...

... generation in a day time and the energy consumption during a survey mission are formulated. The solar energy is regarded as the main power source for implementing survey missions. The survey error is estimated by taking into account of the effect caused by spatial resolution, and the total survey time...

...-grade, best grade of ordinary ship steels in toughness, posses suitable or sufficient arrestability for prevention of brittle fracture. kca value steel plate energy consumption specimen impact test steel thickness brittle crack drop weight test metals & mining brittle fracture fatt...

... environmental impact assessment life cycle assessment air emission steel environmental assessment marine structure social responsibility sustainability photochemical smog main material energy conservation environmental law energy consumption china On the Study of a Practical LCA Method for Steel...

... horizontal speed shortest distance coefficient compute air transportation motion model minimum time strong steady flow maximum horizontal speed energy consumption buoyancy attack angle sensor passenger transportation Motion Model and Control Strategies for an Underwater Glider Jiancheng Yu1...

... the electrodes, to reduce energy consumption and to prolong the service life of electrodes, the effects of polarity reversal and current intermittence under a constant applied voltage were also investigated. INTRODUCTION Skirted foundations have now become competitive alternatives to other more traditional...

... it begins to search for the landmark. artificial intelligence itinerary mission planning path planner auv navigation execution procedure execution monitor obstacle vehicle information guidance constraint redermor module mission plan mission point energy consumption landmark...

... of examples. Finally the strategy is compared with a more classical allocation strategy to show that significant reductions in energy consumption can be achieved. INTRODUCTION Dynamic positioning interpreted as an automatic control of the horizontal position and the heading of a vessel may be applicable...