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Advances in Marine Navigation and Safety of Sea Transportation. Introduction
Published in Adam Weintrit, Tomasz Neumann, Advances in Marine Navigation and Safety of Sea Transportation, 2019
In each of them readers can find a few subchapters. Subchapters collected in the first chapter, titled ‘Advances in Marine Navigation’, concern the following aspects: analysis of primary position validation in ECDIS, comparison between simulator modelled and empirical ship squat prediction, environmental impact of new maritime routes Cadiz-Huelva-Algarve, optimal route planning algorithm for coastal ships considering ocean environment and grounding, probabilistic modelling of ship-bank contacts based on manoeuvring performance under environmental loads, and statistical analysis of the real surface currents and wind parameters for the Szczecin Lagoon.
Justification of main characteristics of river-sea dry-cargo vessels with extra-full hull forms
Published in Petar Georgiev, C. Guedes Soares, Sustainable Development and Innovations in Marine Technologies, 2019
G.V. Egorov, V.I. Tonyuk, A.G. Egorov, I.F. Davydov
Why do the Volgo-Don Max class? 62 % of the total number of new (built in the XXI century) selfpropelled cargo vessels of river-sea and inland navigation ones, as well as restricted marine navigation areas ones are vessels of “Volgo-Don Max” class. These vessels correspond to the dimensions of the Volga-Don shipping Canal (VDSC) and are intended to replace the well-known Soviet series of “Volgoneft” and “Volgo-Don” vessels, i.e. they are universal in dimensions for operation on the European part of inland waterways of Russia.
Optimal container ship size: a global cost minimization approach
Published in Maritime Policy & Management, 2019
Feng Lian, Jiaru Jin, Zhongzhen Yang
Jansson and Shneerson (1986) proposed the theory of economies of scale for ships. The authors suggested that economies of scale for ships occur at the stage of marine navigation, while external diseconomies occur at the port side, but both affect the economy of ship upsizing. Tozer (2003) and Tozer (2002) illustrated the cost differences between ultralarge container ships and smaller ones in terms of operating speeds. Sys et al. (2008) quantified the cost advantage of ship sizes of up to 18,000 TEU with a linear service cash flow model and considered the cost differences between single propeller system and twin propeller systems. By actual operation performance data, Lim (1994) investigated the earnings and costs of container service based on charter base and hire base indices and thought the question of optimum vessel size has no generally applicable answer. Talley (1990) calculated the operating and port costs and considered the size-upward trend in the case of fewer numbers of port calls, shorter port times and longer shipping distances.
The effect of atmospheric ducts on the propagation of AIS signals
Published in Australian Journal of Electrical and Electronics Engineering, 2019
Wenlong Tang, Hao Cha, Min Wei, Bin Tian
AIS is an abbreviation for shipborne automatic identification system that operates in the VHF band. It is a new type of marine navigation equipment, mainly used in ship safety navigation and communication between ships, and between ships and shore stations. Using knowledge of VHF propagation, reliable predictions of AIS performance can be achieved based on the current atmospheric conditions. The impact of the atmospheric environment over the English Channel on the VHF and UHF communication links is studied and finds that the propagation loss calculated by the parabolic equation method, and the experimental results has a strong correlation under different evaporation duct heights (Alam et al. 2016; 2018). A number of sea communication experiments in the VHF band are made, and the applicable propagation models in different scenarios based on the analysis of the experimental data and comparison with the existing theory of maritime radio propagation are outlined in (Wang et al. 2017). But how different is the VHF propagation of AIS signals? To our knowledge, little study was found to specifically analyse the impact of different atmospheric conditions on the performance of the AIS system. The impact of North Sea weather on AIS and coastal radar wave propagation is examined, and the Advanced Refractive Effects Prediction System (AREPS) is used to predict coverage and propagation loss for both AIS and coastal radar in (Bruin 2016). The AIS system is used to enhance ship detection performance in coastal regions and shows excellent capability by using ducted propagation (Vesecky, Laws, and Paduan 2009).
FMCW – Radar Design
Published in IETE Journal of Research, 2019
Chapter 9 gives practical aspect of design and development of FMCW Battle field Surveillance Radar. It includes the basic introduction to hardware. Similarly, chapter 10 deals with Design & Development of FMCW Marine Navigation Radar, while the last chapter talks about “Anti-ship missile seeker”.