Wave Wash and Its Effects in Ship Design and Ship Operation: A Hydrodynamic Approach to Determine Maximum Permissible Speed in a Particular Shallow and Narrow Waterway

Saha, Goutam Kumar; Abdullah, Mohammad Sayem Bin; Ashrafuzzaman, Mohammad

doi:10.1016/j.proeng.2017.08.129

Cited by 5 publications

(3 citation statements)

References 2 publications

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“…The resulting waves generated by the vessel according to the speed it develops, i.e. depending on the Froude number of depth can be classifi ed into 4 categories [8]: -Subcritical ( Fn h < 0.75) -A Kelvin wake pattern in created, -Transcritical (0.75 < Fn h < 1.0 ) -By increasing the Froude number (due to increasing vessel speed or decreasing depth), the angle of propagation of divergent waves is also being increased, as well as the period of leading waves. Many larger vessels cannot develop a higher speed than subcritical (displacement), but smaller vessels that can achieve planing speed, operate at transcritical (transitional) speed for some time during acceleration and deceleration.…”

Section: Characteristics Of Wakes Caused By Vessels / Obilježja Brazd...mentioning

confidence: 99%

Impact of high speed of vessels on narrow and shallow waterways with reference to the Adriatic Sea

Komać¹,

Mohović²,

Strabić³

2022

Naše more

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Sudden increase of demand of high speed craft, especially fast passenger-cargo ferries and catamarans in the last few decades, has made it necessary to respond in a timely manner to the set of negative impacts that such vessels cause with high speeds near coastal areas. All relevant literature was investigated in this paper, as well as the reports, scientific articles by different databases, and collected data was evaluated by analyzing the content and mitigation measures by specific categories in order to emphasise the importance of potential negative effects of wakes. In addition to the mechanism of wake generation and physical characteristics of waves generated by vessels in coastal areas, a critical overview of the investigated impacts is presented, which includes: impact on safety (lives, vessels, structures), and environmental impact (hydro-morphological impact, impact on flora, fauna and cultural heritage). Particular attention is paid to the analysis and review of applied methods of risk assessment and adoption of measures in various countries where such research has already been conducted to a certain extent, in order to compile a set of effective recommendations that can be applied to reduce negative impacts. Since the previous researches mostly cover some impacts individually, it is also pointed out, among other recommendations, the importance of conducting concrete comprehensive coordinated research on this topic with an emphasis on the Adriatic Sea area, which is unique in multiple locations in terms of safety and environmental aspect, as well as in terms of the aspect of preserving the cultural heritage.

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Section: Characteristics Of Wakes Caused By Vessels / Obilježja Brazd...mentioning

confidence: 99%

Impact of high speed of vessels on narrow and shallow waterways with reference to the Adriatic Sea

Komać¹,

Mohović²,

Strabić³

2022

Naše more

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“…Hasan et al, (2019) found that "lack of proper monitoring, poor implementation of laws as well as lack of modern treatment plants and water supply systems, and poor awareness and education about water use and safety are the main prompt of water pollution in Bangladesh". Wave wash is defined as a hydrodynamic tool which is used to explain the waves generated by ships and its effect on the shore as well as shore erosion (Saha et al, 2017). The paper aimed to describe wave wash as one of the most integral factors in imposing restrictions on the maximum speed of the ship as well for the purpose of selecting the speed for any shallow or narrow waterway.…”

Section: Challenges Faced In the Development Of Maritime Professionals In Bangladeshmentioning

confidence: 99%

Development of Maritime Professionals in Bangladesh: A Literature Review

Hossain

Islam

2021

int.jour.sci.res.mana.

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Bangladesh has a rich shipping history. The country is dependent economically as well as socially and politically on the industry. While, the country is slowly regaining global recognition, the industry is no less on challenges. The seafarers face major issues due to the factors such as conditions of the maritime education and training institutes, forged documentation, negative reputation of the country, etc. Further, the seafarers of Bangladesh also lack skills and training when compared to the seafarers of the other developed countries. Moreover, the country lacks technological resources too, which makes it even more difficult for the seafarers to grow in the industry. The article looked at the different sets of improvements that can be made to the shipping industry and make it easy for the seafarers to get proper jobs in the industry. This study explored the challenges and opportunities for the seafarers and the industry though a review of literature.

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“…Na Engenharia Naval, o problema de wave wash ou "lavagem causada por ondas", está relacionado com a geração de ondas da superfície da água causadas pela ação de uma embarcação em movimento. Ao não existirem muitas praias nos rios, que atenuem a energia das ondas, elas podem contribuir no processo de erosão das suas margens (Saha;Abdullah;Ashrafuzzaman, 2017), como exemplificado na Figura 1. Esta figura destaca duas áreas distintas na região amazônica que têm experimentado erosão significativa.…”

Section: Introductionunclassified

Estudo Das Ondas Geradas Por Uma Embarcação Regional Do Tipo Expresso Utilizando O Software Maxsurf Resistance

Soares,

Fontes,

Del Campo

et al. 2023

Rev. Foco

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As embarcações que operam com velocidade de avanço tendem a gerar trens de ondas na superfície da água que se propagam em diversas direções com relação à trajetória da embarcação. A dissipação energética resultante das ondas geradas pelas embarcações pode causar impactos ambientais e afetar a segurança da navegação, principalmente em zonas de águas restritas como canais ou rios. Além de contribuir na erosão das margens dos rios, os trens de ondas gerados podem interagir com banhistas ou embarcações menores, causando riscos de acidentes. Este trabalho tem como objetivo estudar os trens de ondas gerados por uma embarcação de uso na região amazônica utilizando o método do corpo esbelto, disponível no software Maxsurf Resistance, para representar a superfície livre da água. Para isto, foi considerado o caso de estudo de uma embarcação utilizada para transporte de passageiros na região amazônica, conhecida como Expresso. Foi demonstrado o uso do método para verificar os efeitos da variação da velocidade e do calado da embarcação nos trens de ondas gerados. O aumento da velocidade de avanço e do calado estão relacionados com o aumento da altura inicial das ondas. Espera-se que o presente trabalho possa ser estendido para avaliar as ondas geradas por outras embarcações regionais através de análises numéricas e experimentais.

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Wave Wash and Its Effects in Ship Design and Ship Operation: A Hydrodynamic Approach to Determine Maximum Permissible Speed in a Particular Shallow and Narrow Waterway

Cited by 5 publications

References 2 publications

Impact of high speed of vessels on narrow and shallow waterways with reference to the Adriatic Sea

Impact of high speed of vessels on narrow and shallow waterways with reference to the Adriatic Sea

Development of Maritime Professionals in Bangladesh: A Literature Review

Estudo Das Ondas Geradas Por Uma Embarcação Regional Do Tipo Expresso Utilizando O Software Maxsurf Resistance

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