Ciencia y tecnología de buques <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;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;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;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;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; left: 10px; width: 390px; height: 0; color: #fff; background-color: #000;"> <h1>Componente marítimo</h1> OPV</div> </li> <li class="show"><a title="cotecmar" href="/public/site/images/biteca/3_658.jpg"><img src="/public/site/images/biteca/3_658.jpg" alt=""></a> <div style="top: 5px; left: 10px; width: 390px; height: 0; color: #fff; background-color: #000;"> <h1>Componente fluvial</h1> Lancha patrullera de río LPR</div> </li> <li class="show"><a title="cotecmar" href="/public/site/images/biteca/4_658.jpg"><img src="/public/site/images/biteca/4_658.jpg" alt=""></a> <div style="top: 5px; left: 10px; width: 390px; height: 0; color: #fff; background-color: #000;"> <h1>Oficinas de diseño</h1> Cotecmar</div> </li> <li class="show"><a title="cotecmar" href="/public/site/images/biteca/5_658.jpg"><img src="/public/site/images/biteca/5_658.jpg" alt=""></a> <div style="top: 5px; left: 10px; width: 390px; height: 0; color: #fff; background-color: #000;"> <h1>Ingeniería concurrente</h1> </div> </li> </ul> </div> <div class="buttons"> <div class="prev-btn">.</div> <div class="play-btn">.</div> <div class="next-btn">.</div> </div> </div> </div> </div> en-US <p>The authors who publish in this Journal certify that:</p><ul><li>The work submitted for publication in The Ship Science and Technology journal, was written by the author, given that its content is the product of his/her direct intellectual contribution.</li><li>All data and references to material already published are duly identified with their respective credits and are included in the bibliographic notes and quotations highlighted as such.</li><li>All materials submitted for publication are completely free of copyrights; 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="" 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="" target="_blank"></a></li></ul> (Carlos Eduardo Gil De los Rios) (Adriana Lucía Salgado Martinez) Mon, 08 Apr 2019 00:00:00 -0500 OJS 60 Editorial Note Carlos Eduardo Gil de los Ríos Copyright (c) 2019 Cotecmar Mon, 08 Apr 2019 00:00:00 -0500 Regulatory Safety Considerations about Ship Design <p class="p1"><span class="s1">In this article, some of the criteria established by the International Maritime Organization (IMO) will be described through technical documents related to the design of ships such as the Goal Based Standards (GBS) and the Risk-Based Ship Design (RBD). Later on, an approval model will be proposed for the design of new ships, taking into account the recommendations of the International Maritime Organization (IMO) while articulating the work of maritime administrations, the naval industry and classification houses.</span></p> Rafael Hurtado Valdivieso Copyright (c) 2019 Cotecmar Mon, 08 Apr 2019 00:00:00 -0500 Construction of productivity windows for fillet welds using the FCAW process for thin ship panel manufacturing <p class="p1"><span class="s1">The FCAW process used filler metal E71T-11 of Ø0.035” to apply fillet welds with a size of ~4mm on T-joints made of ASTM A36 steel, in a horizontal position, using 42 appropriate combinations of wire feed speeds -WFS- (between 50 and 540 ipm), voltages (13-33V) and welding speeds (4.2-24.5 ipm). The test welds applied with each combination were inspected visually and by macro-attack to establish their compliance with the acceptance criteria for naval panels provided by the American Bureau of Shipping - ABS. With these results, Voltage vs. WFS, Voltage vs. Amperage and Heat Input vs. WFS graphs were constructed, and productivity windows were drawn over them including the combinations of welding parameters capable of producing welds of acceptable quality. The productivity windows obtained with this method, called ARCWISE, allow proper welding parameters to be selected during the design of WPSs avoiding iterative processes of trial and error.</span></p> Styvens Hernandez Palacio, Mateo Cardona Castaño, Jorge E. Giraldo Barrada Copyright (c) 2019 Cotecmar Mon, 08 Apr 2019 00:00:00 -0500 Application of the Montecarlo method for the validation of the budget of a suezmax type ship <p class="p1"><span class="s1">As the name suggests, the budget for the construction of a ship, in this case a Suezmax, means to specifically pre-suppose in economic terms, the activities and movements to carry out during the construction of said ship. The importance of this essential phase of the construction process lie one hand in budgeting a competitive price in the market, but without causing economic losses for the shipyard, in order to make a profit for the company.<span class="Apple-converted-space"> </span>This study proposes the use of the Monte Carlo method to obtain a greater reliability in the valuation of the Suezmax vessel; in this case, the triangular method will be used, which starting point is based on results obtained from previous research and from which the most likely, most pessimistic and most optimistic ship budget is obtained in order to later perform a simulation.<span class="Apple-converted-space"> </span></span></p><p class="p1"><span class="s1">For the realization of said simulation the ship is divided into different items, that will be assigned an optimistic and pessimist percentage based on a likely budget, according to the degree of trust of the shipyard in said concept.</span></p><p class="p1"><span class="s1">The final scope will be the calculation of the management reserve used to rectify any unforeseen item(s) in the construction of the ship.</span></p> José María Torres do Rego, Carlos Mascaraque Ramírez, Pablo Martínez López, David Salvador Sanz Sánchez Copyright (c) 2019 Cotecmar Mon, 08 Apr 2019 00:00:00 -0500 Conceptual design of a 20 TBP port tugboat for the "Bahía Málaga" ARC Naval Base <p class="p1"><span class="s1">This work is part of the development of a conceptual proposal for a 20-ton bollard pull harbor tug, for the support of vessels no greater than 7,500 tons of displacement with safety standards for port maneuvers within the jurisdictional areas of the Colombian maritime authority (DIMAR) for the Colombian Navy.</span></p><p class="p1"><span class="s1">The design of this vessel was focused in providing the best opportunities to take into account, because the Colombian Navy fleet will have new vessels with greater displacement by the year 2030, this growth will be require the acquisition of new tugs.</span></p><p class="p1"><span class="s1">The execution of this design was based on the regulation of the "American Bureau of Shipping", abbreviated ABS, complying with all the specifications and parameters of a harbor tug.</span></p><p class="p1"><span class="s1">The Colombian Navy units of this type are currently boats whose useful life is over 5 years, which entails unsafe maneuvering, risking human lives and the units themselves. Currently, the Navy requires new towing services to comply with its institutional mission.</span></p><p class="p1"><span class="s1">This project seeks to develop a conceptual design for future projects to undertake the construction of this vessel. In this way, we will be fulfill the development objectives of the Strategic Surface Force the Faro 2030 Plan.</span></p> Orlando Royet del Gallego, Diego Orozco Howard Copyright (c) 2019 Cotecmar Mon, 08 Apr 2019 00:00:00 -0500 The draughtsman of architecture and engineering in the naval, maritime and fluvial industry of Cartagena <p class="p1"><span class="s1">Careers and industry tend to go hand in hand with the references that are formed throughout their history, but there are careers hidden from them, without demeriting their importance in their process and growth. The Architectural and Engineering Draughtsmen are professional technologists who are active in the Naval Industry and little is referred to them as an associated profession. However, for all those who are immersed in this industry, the work they perform and their recognition in supporting the achievement of projects in the different design and construction stages is very clear. What is really worth highlighting in them, is the growth and evolution they have taken in this industry.</span></p><p class="p1"><span class="s1">The times when the draughtsman transcribed ideas into drawings and plans is on the verge of extinction. Today, trained personnel is required and available to develop virtual models giving characteristics associated with the properties of each element and its integration into the total function of the project. These technologists have the experience and specific knowledge in the industry, and become the right hand of designers, engineers and builders, to develop designs from their basic stage to the closure of projects, with the confidence that they can receive alarms and ideas that make possible the completion of each job. For this reason, they take the name of designers or modelers according to the particular case of the company for which they work.</span></p> Aleymar Martínez Olea Copyright (c) 2019 Cotecmar Mon, 08 Apr 2019 00:00:00 -0500