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To further our contribution in the Gaters project, sponsored by the EC H2020 Programme, NAS Ltd. - Naval Architectural Services recently published a paper in the Offshore Energy and Storage Symposium (OSES2023) (https://lnkd.in/dfpwcpNp) with the following title: “The Full-Scale Performance Prediction of a General Cargo Ship with a Retrofitted Gate Rudder System using CFD Procedures” ⛵.   This time round, the goal of the study was to predict the performance of the General Cargo vessel with the Gate Rudder System (GRS) at ship-scale conditions using state-of-the-art CFD techniques and the results were compared to the model-scale CFD results and extrapolated towing tank test data. These studies built on the previous work that focused on model-scale simulations, published at the AYOCOL Conference (https://lnkd.in/dfGCMNYa) in December 2022.   Once again, as was deduced from the model-scale analysis, the GRS blades produce a thrust, as opposed to the conventional rudder which produces a resistance. However, in full-scale, the GRS performed even better, as the thrust produced was several times larger than that obtained for the model scale simulations: more than 20% reduction in delivered power compared to the conventional rudder system!   Therefore, our findings show that the thrust produced by the GRS blades in full-scale lead to an even higher reduction in power demand and fuel consumption ⬇⛽💰 , when compared to the conventional rudder system.   Head to the link below to find out more about the Gate Rudder System and the Gaters project! 🔎 https://lnkd.in/d_aRxaBn

📣 News! 🚢 We're happy to announce the publication of a novel paper in the Journal of Naval Sciences and Engineering (JNSE) from our upcoming December 2023 issue. Title: Numerical Investigation of the Hydrodynamic Performance of a Propeller Converted from FPP to CPP Author: Dr. Ahmet Yurtseven DOI: https://lnkd.in/dkzf6MbT In this study, the author delves into the fascinating realm of naval engineering, investigating the hydrodynamics of a Controllable Pitch Propeller (CPP) transformed from a Fixed Pitch Propeller (FPP). The findings shed light on the practical feasibility of such conversions and their impact on propeller efficiency. 🌐 Read the paper now in JNSE's Early Pub issue for December 2023: https://lnkd.in/dsrn-VgQ We invite researchers and scholars to be a part of our upcoming issue – submit your work and be part of the conversation! : https://lnkd.in/dQsrCY3v #JNSE #NavalEngineering #Research #Hydrodynamics #CPP #FPP #NavalSciences

One question to the Naval Architects in my network (please challenge my assumptions) The negative impact of added roughness from e.g. #marine #biofouling on the #frictionalresistance of a hull and, thereby, the total powering demand of the vessel are fairly well characterized (at least, its order of magnitude). To the best of my knowledge, its impact clearly exceeds the claimed savings from Energy Saving Devices (ESDs) even under ideal conditions. At the same time, the added cost of reducing the risk of marine biofouling by upgrading the #hullcoatings is significant lower than the retrofitting cost for most ESDs. However, I still get the impression that many Naval Architects have a preference towards sophisticated ESDs rather than state of the art hull coatings as their best advice to increase the energy efficiency of a vessel. Is that true? And, if it is: which part of my reasoning above is faulty/biased? My guess is that it is because biofouling is much more difficult to predict/model/simulate compared to "mechanical" changes to the hydrodynamics of a hull. Looking forward to learning from you and please excuse my obvious bias :-)

Explore first, then create. The approach we take in offering our services for companies and institutions, or directly to the shipowner, is based on a creative recombination of scientific models, theories, and experiments from different disciplines, applied to product development. This includes naval architecture, which encompasses: ✅ Hull shaping ✅ Hydrodynamic optimization ✅ Propulsion ✅ Appendages sizing #MICAD #NavalArchitecture #HullShaping #HydronamicOptimization #Shipowners

Monitoring siltation changes in lakes is an important application of USV equipped with multibeam echosounder. The process of sediment deposition brought by rivers will lead to shallower and smaller lakes, and affect the ecosystem. Therefore, timely mastery of the spatial and temporal variation rules of lake siltation is crucial for lake management and protection. CHCNAV's Apache6 USV is equipped with a NORBIT multibeam echosounder system. This advanced echosounder produces high-resolution 3D images of the waterfloor, enabling efficient hydrographic surveying and engineering operations. Learn more:https://bit.ly/44TJFRY

A glimpse of our second semester practical where we went for a hydrographic survey to identify seabed wrecks. This survey was conducted on May 23rd in Stade, Germany in the DVocean vessel which has a draft size of 0.9m and 2.65m width with a top speed of up to 6 knots. The vessel used advanced equipment to gather information regarding the wrecks, such as their coordinates, shallowest point, height above the seabed, dimensions, and approximate weight of iron. The equipment used during the survey included a 1.Multibeam System: Kongsberg EM2040P, 2.Sub-bottom profiler: Innomar2000 compact, 3.GNSS Septentrio AsteRx-U3,and 4.SVP AML-3 LGR. The figures show the bathymetric chart of the wreck site and the approximate dimensions of the wreck.

Nice technique with low to no vibrations

Marine Engineers and Naval Architects are integral in transforming the shipping industry towards sustainability and efficiency through the development and application of innovative technologies aimed at reducing emissions and improving operational performance. Their role is increasingly in demand as the sector seeks to comply with environmental regulations and adopt greener practices. Their expertise in alternative fuels, ship design optimization, and advanced propulsion systems is crucial for ensuring compliance with environmental standards and reducing the industry's carbon footprint. This growing need positions them as essential contributors to a sustainable maritime future. #MaritimeEngineering #NavalDesign #EmissionReduction #TechForward #ShippingInnovation

Marine Engineers and Naval Architects are integral in transforming the shipping industry towards sustainability and efficiency through the development and application of innovative technologies aimed at reducing emissions and improving operational performance. Their role is increasingly in demand as the sector seeks to comply with environmental regulations and adopt greener practices. Their expertise in alternative fuels, ship design optimization, and advanced propulsion systems is crucial for ensuring compliance with environmental standards and reducing the industry's carbon footprint. This growing need positions them as essential contributors to a sustainable maritime future. #MaritimeEngineering #NavalDesign #EmissionReduction #TechForward #ShippingInnovation

Marine Engineers and Naval Architects are integral in transforming the shipping industry towards sustainability and efficiency through the development and application of innovative technologies aimed at reducing emissions and improving operational performance. Their role is increasingly in demand as the sector seeks to comply with environmental regulations and adopt greener practices. Their expertise in alternative fuels, ship design optimization, and advanced propulsion systems is crucial for ensuring compliance with environmental standards and reducing the industry's carbon footprint. This growing need positions them as essential contributors to a sustainable maritime future. #MaritimeEngineering #NavalDesign #EmissionReduction #TechForward #ShippingInnovation