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Keywords: resistance
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Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-029
... largely depend on the hydrodynamic performance of a hull and its propulsion system(s). Merchant vessels typically use the by far largest portion of the overall energy available onboard for propulsion. This makes resistance and propulsive efficiency the most important factors influencing energy consumption...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-018
... Architecture & Marine Engineering, National Technical University of Athens Flapping-foil thrusters arranged at the bow of the ship are examined for extraction of energy from wave motions by direct conversion to thrust, offering also dynamic stability and reduction of added wave resistance. In the framework...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-031
...The 8th International Symposium on Ship Operations, Management & Economics (SOME) 7-8 March 2023, Athens GR Copyright © 2023 Society of Naval Architects and Marine Engineers (SNAME) www.sname.org Recent Progress on the Transparent Prediction of the Added Resistance and Powering of a Ship in Waves...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-020
... is used to evaluate the emissions of , , , , as a function of time and location. In the current version of the model, the engine's loads during voyages can be determined with improved accuracy based on the ratio of the vessel s speed over the calculated resistance that the ship is required to overcome...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-006
... creates added resistance that is reflected in fuel consumption (Veneti, 2017) as well as the possibility of damages along with increased projected times of arrival. Digital Twin Model Digital Twin Model is a virtual model designed to accurately reflect a physical object. The object being studied...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-023
... is presented. Based on specified design requirements regarding a vessel s main characteristics, namely length and beam overall, displacement and speed, a formal optimization study is performed, aiming to identify favorable hullforms with minimum total resistance in calm water. To this end, a parametric model...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-009
..., performance maps, satellite data and field Resistance Calm Water Resistance In this section, the development of a computational module for the calculation of calm water resistance based on ship particulars and navigational data using established methodologies state-ofthe-art methodologies such Ayre, Taggart...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-008
... Georgousis1 (V), Kristian Nielsen1 (V), Jakob Petersen1 (V), Alexandr Adveev1 (V), Eirini Arvanitaki1 (M), Sergey Tuymetov1 (V) 1. Vessel Performance Solutions ApS, Athens & Copenhagen Assessment of vessel performance requires estimating various types of added resistance to the calm water resistance...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-027
... a basic feature is the calculation of the total resistance. For the wave added resistance component, the in-house seakeeping software NEWDRIFT+ is employed, which uses a 3-D panel method (e.g., Liu et a., 2011, Kytariolou and Themelis, 2023). The other resistance components that are crucial are the calm...
Proceedings Papers

Paper presented at the SNAME 8th International Symposium on Ship Operations, Management and Economics, March 7–8, 2023
Paper Number: SNAME-SOME-2023-034
...The 8th International Symposium on Ship Operations, Management & Economics (SOME) 7-8 March 2023, Athens GR Copyright © 2023 Society of Naval Architects and Marine Engineers (SNAME) www.sname.org Numerical analysis of the impact of the bow thruster opening on a fast catamaran s resistance Suleyman...
Proceedings Papers

Paper presented at the SNAME 7th International Symposium on Ship Operations, Management and Economics, April 6–7, 2021
Paper Number: SNAME-SOME-2021-014
... are investigated experimentally. Microbubbles of up to 20 [μm] are introduced in the boundary layer through microbubble generators attached on the stem of a 2.52 [m] long ship treated with a superhydrophobic nano-ceramic coating. Resistance measurements are conducted at various towing speeds and trim angles...
Proceedings Papers

Paper presented at the SNAME 6th International Symposium on Ship Operations, Management and Economics, March 20–21, 2018
Paper Number: SNAME-SOME-2018-021
... for two different ships and some key points are discussed. The potential of such methods is displayed and the possibility of distinguishing the hull from propeller effects is approached. resistance athens propeller ittc energy conservation efficiency evaluation monitoring timely evaluation...
Proceedings Papers

Paper presented at the SNAME 6th International Symposium on Ship Operations, Management and Economics, March 20–21, 2018
Paper Number: SNAME-SOME-2018-009
... design application case resistance platform ship operation To be presented at the 6th International Symposium on Ship Operations, Management and Economics (SOME) of the Society of Naval Architects and Marine Engineers (SNAME), Athens, March 20-21, 2018 HOLISTIC Ship Design for Life Cycle Abstract...
Proceedings Papers

Paper presented at the SNAME 6th International Symposium on Ship Operations, Management and Economics, March 20–21, 2018
Paper Number: SNAME-SOME-2018-007
... The present study investigates the use of Artificial Neural Networks (ANNs) for the resistance prediction of hullforms designed according to the MARAD Systematic Series. Experimental data for the residual resistance coefficient of these hulls, provided by MARAD in a series of diagrams, have been...
Proceedings Papers

Paper presented at the SNAME 6th International Symposium on Ship Operations, Management and Economics, March 20–21, 2018
Paper Number: SNAME-SOME-2018-013
... The present study aims at the quantification of the effect of uncertainty of the weather conditions on the fuel consumption of a vessel. More specifically, the uncertainty of the seaway conditions, namely spectral wave height, period and heading, on ship's added resistance will be introduced...
Proceedings Papers

Paper presented at the SNAME 6th International Symposium on Ship Operations, Management and Economics, March 20–21, 2018
Paper Number: SNAME-SOME-2018-015
... Marine structures, such as ships, are vulnerable to fouling, leading to increased hull resistance (decreased propulsion efficiency). In order to reduce this phenomenon, ship owners tend to clean the hull and the propeller surface prior to dry docking. It is essential to understand which part...

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