Ciencia y tecnología de buques https://shipjournal.co/index.php/sst <div class="container"> <div class="wt-rotator"> <div class="screen"><noscript>&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;!-- placeholder 1st image when javascript is off --&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt; &amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;lt;img src="images/madness_arch2.jpg"/&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;gt;</noscript></div> <div class="c-panel"> <div class="thumbnails"> <ul> <li class="show"><a title="cotecmar" href="/public/site/images/biteca/1_657.jpg"> <img src="/public/site/images/biteca/1_657.jpg" alt=""> </a> <div style="top: 5px; left: 10px; width: 390px; height: 0; color: #fff; background-color: #000;"> <h1>Componente fluvial</h1> PAF-P</div> </li> <li class="show"><a title="cotecmar" href="/public/site/images/biteca/2_658.jpg"><img src="/public/site/images/biteca/2_658.jpg" alt=""></a> <div style="top: 5px; 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consequently, the author accepts responsibility for any lawsuit or claim related with Intellectual Property Rights thereof, Exonerating of responsibility to The Science and Technology for the Development of Naval, Maritime, and Riverine Industry Corporation, COTECMAR.</li><li>In the event that the article is chosen for publication by The Ship Science and Technology journal, the author state that he/she totally transfers reproduction rights of such to The Science and Technology for the Development of Naval, Maritime, and Riverine Industry Corporation, COTECMAR.</li><li>The authors retain the copyright and transfer to COTECMAR the right of publication and reproduction of the work which will be simultaneously subject to the <strong><a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">Creative Commons Attribution License (CC -BY)</a> </strong>, which allows the license to copy, distribute, display and represent the work and to make derivative works as long as it recognizes and cites the work in the manner specified by the author or licensor.</li><li>For more information about the <strong>Creative Commons Attribution License (CC -BY)</strong> and his use and scope, please visit the following web page <a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode" target="_blank">https://creativecommons.org/licenses/by-sa/4.0/legalcode</a></li></ul> Editorial Note https://shipjournal.co/index.php/sst/article/view/208 Carlos Eduardo Gil de los Ríos Copyright (c) 2020 Cotecmar https://creativecommons.org/licenses/by/4.0/ 2020-07-31 2020-07-31 14 27 7 7 Preliminary design of a management maintenance model of sensitive engineering assets, for a ship under the concept of reliability engineering https://shipjournal.co/index.php/sst/article/view/202 <p class="p1"><span class="s1">The objective of this research is to apply a dynamic maintenance model to the assets of the engineering department of a navy vessel, based on the concept of reliability engineering, which analyzes the statistics of failures of different equipment, in a period of 140 months, in order to determine which is the most sensible equipment, the failure modes and the impact it produces on the ship’s platform. This way, it is possible to focus on the problems that produce the biggest impact in the capacity of the Unit´s, in order to fulfill its roles, and this way, contribute increase its availability. This is an iterative process of continuous improvement for the maintenance plans.</span></p> Jorge Cárdenas Molina Ivonne Olguín Valenzuela Copyright (c) 2020 Cotecmar https://creativecommons.org/licenses/by/4.0/ 2020-07-31 2020-07-31 14 27 9 23 10.25043/19098642.202 Current and Potential Contribution of the Colombian Ministry of Defense to the National River Master Plan and the Accomplishment of the Sustainable Development Goals through COTECMAR https://shipjournal.co/index.php/sst/article/view/203 <p class="p1"><span class="s1">This article aims to present the current and potential contributions made by the Ministry of National Defense through the Corporation of Science and Technology for the Development of the Naval Maritime and River Industry - COTECMAR - and the National Navy to the River Master Plan and to the fulfillment of the Sustainable Development Objectives defined in the United Nations Agenda 2030. To this end, the contributions that have been generated so far are explored, such as the case of the river piers, the pilot project for the River Information System (RIS) and the integration of the Small Vessels Committee that is essential for the operation of a future National Port Agency. Likewise, potential solutions that can operate to meet regional needs in health, education, transport, tourism, etc. are highlighted. Finally, the opportunity to integrate the ODS, the development plans and the River Master Plan in the structuring of interregional project portfolios focused on closing social gaps in Colombia is foreseen.</span></p> Edwin Giovanny Paipa Sanabria Henry Murcia Fernández Copyright (c) 2020 Cotecmar https://creativecommons.org/licenses/by/4.0/ 2020-07-31 2020-07-31 14 27 25 37 10.25043/19098642.203 Calculation of the Specific Attenuation in Satellite Bands Due to the Rain in the City of Cartagena and its Importance in the Naval Field https://shipjournal.co/index.php/sst/article/view/204 <p class="p1"><span class="s1">This work studies the attenuation by rain that occurs in the Caribbean region, specifically, in high frequency bands, considering that modern communication systems make greater use of satellite bands. In this sense, the methodology of the recommendation ITU 838 was used to calculate the radio attenuation by rain in the city of Cartagena (Colombia), for the range of 1-100 GHz, and the data provided by the Center of Oceanographic and Hydrographic Research - CIOH were used as atmospheric information sources. As a result, the attenuation for the first quarter of the analyzed years was observed to be low (2.0x10-2 dB/km), growing in the following months until October (1.0x10-1 dB/km), when it decreases again. This information is particularly useful in the naval field, especially, in relation to the use of these frequencies for information exchange.</span></p> Lorenzo Cardona William Cuadrado Copyright (c) 2020 Cotecmar https://creativecommons.org/licenses/by/4.0/ 2020-07-31 2020-07-31 14 27 39 53 10.25043/19098642.204 Design and Structural Analysis of a SWATH type vessel using the Finite Element Method and its response to Slamming events https://shipjournal.co/index.php/sst/article/view/205 <p class="p1"><span class="s1">The main objective of this study is to analyze the structural response of a boat during a slamming event using the Finite Element Method in a Small Water Area Twin Hull (SWATH) type boat.<span class="Apple-converted-space">&nbsp; </span>In the mentioned load condition, the acceptance criteria established by a classification society must be fulfilled, taking into account the areas where this event affects the structure such as the junction deck, the pontoons and other structural members established by the standard, all this generated by the high pressure loads in the ship's structure in a very short period of time being an element of study in this type of vessels, as long as they are within the range of high speed vessels. Among the main results of this study were the deformations and stresses in the structure obtained under the reference parameters of the classification society.</span></p> Hugo Leonardo Murcia Gallo Richard Lionel Luco Salman David Ignacio Fuentes Montaña Copyright (c) 2020 Cotecmar https://creativecommons.org/licenses/by/4.0/ 2020-07-31 2020-07-31 14 27 55 66 10.25043/19098642.205 Jib crane bearing selection through simulation https://shipjournal.co/index.php/sst/article/view/206 <p class="p1"><span class="s1">Through the corrective maintenance process of a bearing, regardless of its origin, certain anomalies related to its main elements, due to the condition of the type of maintenance, are expected. This was the case of the jib crane of the Caribbean Submarine fleet, used mainly to load the wiring and charging sockets for the supply of electrical energy to the Submarines. During a routine operation, it malfunctioned and stopped working without warning. An inspection was carried out in which corrective maintenance was deemed necessary, it was at the time that the bearing support was uncovered and its advanced state of deterioration was observed. Being this the main failure, and through application of engineering principles and simulation software, the reason for the deterioration was determined, and the optimal bearings for the correct operation of the jib crane were selected.</span></p> Juan Sebastián Lugo Pinilla Copyright (c) 2020 Cotecmar https://creativecommons.org/licenses/by/4.0/ 2020-07-31 2020-07-31 14 27 67 73 10.25043/19098642.206 A Preliminary Study of Routing Protocols in a Tactical Data Link Ad Hoc Network in Colombian Maritime Scenario https://shipjournal.co/index.php/sst/article/view/207 <p class="p1"><span class="s1">Tactical Data Link (TDL) systems are a kind of Mobile Ad Hoc NETwork (MANET) used in diverse maritime operational environments such as natural disasters, surveillance, maritime search, and rescue. A TDL network is usually composed of nodes or units representing surface ships, submarines, and aircrafts able to participate in maritime operations. A routing protocol is required to establish communication between nodes, which guarantees the route from the source node to the destination node. A TDL has been developed in the Colombian Caribbean Sea (CTDL). However, no efficient routing protocol has been implemented. This works to perform a preliminary study to implement an appropriate routing protocol for the CTDL.</span></p> <p class="p1"><span class="s1">Local environment constraints, in addition to the chosen protocols' performance analysis, will provide preliminary alternatives for a routing protocol with acceptable efficiency. This article provides a background of ad-hoc networks routing protocols, a description of the Colombian Caribbean maritime operational environment, a comparative analysis of routing protocols, and a discussion of conclusions and future developments regarding CTDL.</span></p> Arturo Arenas Castro Geovanny D. Sánchez Marín Guefry L. Agredo Méndez Camilo E. Segovia Forero Copyright (c) 2020 Cotecmar https://creativecommons.org/licenses/by/4.0/ 2020-07-31 2020-07-31 14 27 75 92 10.25043/19098642.207