{"id":{"repo_id":"brazil-uerj","oai_identifier":"oai:pantheon.ufrj.br:11422/7456"},"canonical_url":"https://search.dev.ndltd.org/etd/brazil-uerj/oai:pantheon.ufrj.br:11422/7456","repository":{"repo_id":"brazil-uerj","name":"Brazil UERJ","base_url":"https://pantheon.ufrj.br/oai/request"},"display":{"title":"Impacto de modelos alternativos de uso de rebocadores portuários no aumento da capacidade de navios","abstract":"This work aims to present an innovating and alternative methodology of use of harbour tugs in assisting the ships’ maneuvers in ports, with the primary purpose of reducing the ship’s transit speed in the access channels to ports and terminals. This reduction of ship’s speed has the consequence of minimizing ship’s sinkage due to waves and squat effect as well. Moreover, such reduction in the ship’s sinkage is converted in an increase of the navigation parameter know as underkeel clearance value. Finally, the final purpose of the work is convert this increase of underkeel clearance in increase of ship’s draft, providing the ship’s owner an increase of cargo to be shipped and, in some cases, an increase of incomes, according to charter rates settled within a contract of affreightment, and tug’s charter prices. The proposed methodology can be used as a tool (in the decision-making process) by commercial directors or managers of ship’s companies, as well as port’s companies, which intends to remove port’s restrictions, by using harbour tugs in assisting ship’s maneuvers.","abstract_html":"This work aims to present an innovating and alternative methodology of use of harbour tugs in assisting the ships’ maneuvers in ports, with the primary purpose of reducing the ship’s transit speed in the access channels to ports and terminals. This reduction of ship’s speed has the consequence of minimizing ship’s sinkage due to waves and squat effect as well. Moreover, such reduction in the ship’s sinkage is converted in an increase of the navigation parameter know as underkeel clearance value. Finally, the final purpose of the work is convert this increase of underkeel clearance in increase of ship’s draft, providing the ship’s owner an increase of cargo to be shipped and, in some cases, an increase of incomes, according to charter rates settled within a contract of affreightment, and tug’s charter prices. The proposed methodology can be used as a tool (in the decision-making process) by commercial directors or managers of ship’s companies, as well as port’s companies, which intends to remove port’s restrictions, by using harbour tugs in assisting ship’s maneuvers.","abstract_has_math":false,"creators":["Soares, Leonardo Sousa"],"institution":"Universidade Federal do Rio de Janeiro","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Pires Junior, Floriano Carlos Martins"],"committee_chairs":[],"committee_members":[],"year":2017,"date_issued":"2017-05","date_published":"2017-05","updated_at":"2026-07-24T01:16:26Z","subjects":["Engenharia oceânica","Utilização de rebocadores nos portos"],"languages":["por"],"rights":["Acesso Aberto"],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/11422/7456","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Pires Junior, Floriano Carlos Martins"]},{"key":"dc:creator","label":"Author","values":["Soares, Leonardo Sousa"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2019-04-26T14:09:59Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2026-05-16T03:00:44Z"]},{"key":"dc:date.issued","label":"Date","values":["2017-05"]},{"key":"dc:publisher","label":"Institution","values":["Universidade Federal do Rio de Janeiro"]},{"key":"dc:publisher.department","label":"Dc Publisher Department","values":["Instituto Alberto Luiz Coimbra de Pós-Graduação e Pesquisa de Engenharia"]},{"key":"dc:type","label":"Dc Type","values":["Dissertação"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Engenharia oceânica","Utilização de rebocadores nos portos"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["por"]},{"key":"dc:rights","label":"Dc Rights","values":["Acesso Aberto"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11422/7456"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This work aims to present an innovating and alternative methodology of use of harbour tugs in assisting the ships’ maneuvers in ports, with the primary purpose of reducing the ship’s transit speed in the access channels to ports and terminals. This reduction of ship’s speed has the consequence of minimizing ship’s sinkage due to waves and squat effect as well. Moreover, such reduction in the ship’s sinkage is converted in an increase of the navigation parameter know as underkeel clearance value. Finally, the final purpose of the work is convert this increase of underkeel clearance in increase of ship’s draft, providing the ship’s owner an increase of cargo to be shipped and, in some cases, an increase of incomes, according to charter rates settled within a contract of affreightment, and tug’s charter prices. The proposed methodology can be used as a tool (in the decision-making process) by commercial directors or managers of ship’s companies, as well as port’s companies, which intends to remove port’s restrictions, by using harbour tugs in assisting ship’s maneuvers."]},{"key":"dc:title","label":"Title","values":["Impacto de modelos alternativos de uso de rebocadores portuários no aumento da capacidade de navios"]}]}],"canonical_facts":{"dc:contributor.advisor":["Pires Junior, Floriano Carlos Martins"],"dc:creator":["Soares, Leonardo Sousa"],"dc:date.accessioned":["2019-04-26T14:09:59Z"],"dc:date.available":["2026-05-16T03:00:44Z"],"dc:date.issued":["2017-05"],"dc:description.abstract":["This work aims to present an innovating and alternative methodology of use of harbour tugs in assisting the ships’ maneuvers in ports, with the primary purpose of reducing the ship’s transit speed in the access channels to ports and terminals. 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