Drafts by Artur Karczewski
Education for Research, Research for Creativity, May 2016
The paper presents the potential and risks of utilizing Rhinoceros and Grasshopper software for p... more The paper presents the potential and risks of utilizing Rhinoceros and Grasshopper software for parametric design and multi-varietal optimization of the hull of a small sustainable ferry. The sustainability criteria, parametric design flowchart and optimizing methods are described. As a result, the advantages and disadvantages of this approach obtained in research-by-design process conducted by intercollegiate team at Gdańsk University of Technology are given.
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Papers by Artur Karczewski
Polish Maritime Research
In the field of ocean engineering, the task of spatial hull modelling is one of the most complica... more In the field of ocean engineering, the task of spatial hull modelling is one of the most complicated problems in ship design. This study presents a procedure applied as a generative approach to the design problems for the hull geometry of small vessels using elements of concurrent design with multi-criteria optimisation processes. Based upon widely available commercial software, an algorithm for the mathematical formulation of the boundary conditions, the data flow during processing and formulae for the optimisation processes are developed. As an example of the application of this novel approach, the results for the hull design of a sailing yacht are presented.
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Polish Maritime Research, 2020
Usually, the concept of sufficient stability of a floating structure is connected with the capaci... more Usually, the concept of sufficient stability of a floating structure is connected with the capacity to keep a small heel angle despite the moment of heeling. The variable responsible for these characteristics is the initial metacentric height, which is the relation between the hydrostatic features of the pontoon and the mass properties of the entire object. This article answers the questions of how heavy the floating system should be, what the minimum acceptable draft is, and whether it is beneficial to use internal fixed ballast. To cover various technologies, a theoretical model of a cuboid float with average density representing different construction materials was analysed. The results indicate that the common practice of using heavy and deep floating systems is not always reasonable. In the case of floating buildings, which, unlike ships, can be exploited only under small heel angles, the shape and width of the submerged part of the object may influence the stability more than ...
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The article analyzes the relationship between the a rchitecture and the structure of a vessel on ... more The article analyzes the relationship between the a rchitecture and the structure of a vessel on the ex ample of the reconstruction design of the wooden sailing yac ht “General Zaruski” built in Ekan ӓs, Sweden, in 1939. The case study was based on the documentation of “Kapar en” (sister yacht), “Młoda Gwardia” (ex "General Zaruski") and the reconstruction classification pro ject made by the authors. The impact of functional, spatial and aesthetic design objectives (e.g. interior inte gration, stability amendment, restoring the origina l exterior styling) on the yacht’s structure as well as influe nc of structural conditions (e.g. type and dimensi o of the structure) on her architecture have been proved. Analiza relacji między architekturą a konstrukcją statku na przykładzie procesu rewitalizacji historycznego Jachtu „Generał Zaruski” realizowanego w latach 2009 2012 Streszczenie W artykule przeanalizowano zwi ązek między architektur ą a konstrukcj ą statku na przykładzie ...
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Polish Maritime Research, 2020
The paper presents a framework for optimising a sailing yacht rig using Multi-objective Evolution... more The paper presents a framework for optimising a sailing yacht rig using Multi-objective Evolutionary Algorithms and for filtering obtained solutions by means of a Multi-criteria Decision Making method. A Bermuda sloop with discontinuous rig is taken under consideration as a model rig configuration. It has been decomposed into its elements and described by a set of control parameters to form a responsive model which can be used for optimisation purposes. Considering the contradictory nature of real optimisation objectives, a multi-objective approach has been chosen to address this issue. Once the optimisation process is over, a Multi-criteria Decision Making method based on a w-dominance relation is applied for filtering out the most interesting solutions from the obtained Pareto set. The proposed method has been implemented, and selected results are provided and discussed.
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Polish Maritime Research, 2017
Ship designing is a complex process, as the ship itself is a complex, technical multi-level objec... more Ship designing is a complex process, as the ship itself is a complex, technical multi-level object which operates in the air/water boundary environment and is exposed to the action of many different external and internal factors resulting from the adopted technical solutions, type of operation, and environmental conditions. A traditional ship design process consists of a series of subsequent multistage iterations, which gradually increase the design identification level. The paper presents problems related to the design of a small untypical vessel with the aid of variant methodology making use of optimisation algorithms. The computer-aided design methodology has been developed which does not need permanent reference to already built real ships and empirical-statistical relations. Possibilities were indicated for integrating together early design stages, and parallel designing of hull shape and parameters.
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Polish Maritime Research, 2017
Dynamic development in practically all fields of science and engineering has not passed over ship... more Dynamic development in practically all fields of science and engineering has not passed over shipbuilding. In last years, engineers got to their use computer software which makes it possible to perform strength and hydrodynamic calculations as well as to visualize design projects in 3 D space [1-4]. At their disposal they have full spectrum of modern solutions associated with the use of advanced materials and technologies [5-7]. More and more attention is also paid to impact onto the natural environment [8,9]. Every new object must influence the environment as low as possible, beginning from building phase through its service life up to final utilization - such approach is called „green-shipping“. However, not only practical reasons are important. Clients, i.e. ship owners and passengers of ships paid more and more attention to image of floating units. During decision taking on that from whom a transport service has to be ordered, the most modern ships of an attractive image matchin...
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Procedia Computer Science, 2022
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Lecture notes in civil engineering, 2022
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Lecture Notes in Civil Engineering, 2021
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Polish Maritime Research, 2020
The increase of seakeeping performance is of particular importance for car and passenger ferries,... more The increase of seakeeping performance is of particular importance for car and passenger ferries, service ships in the gas and oil extraction industry and offshore wind power farm industry, as well as for special purpose ships (including military applications). In the water areas of the Baltic Sea, North Sea, and Mediterranean Sea, which are characterised by a short and steep wave, the hull shape has a substantial impact on the operational capacity and propulsion efficiency of the ship, as well as on comfort and safety of navigation. The article analyses selected aspects of seakeeping for four variants of a selected case study vessel, indicating practical limitations of the strip method. The analysed aspects included hull heaving and pitching, added resistance, Motion Thickness Indicator (MSI), and Subjective Magnitude (SM). Experimental tests were also performed in the towing tank. Their comparison with the numerical results has indicated high inaccuracy of the strip method. What i...
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Polish Maritime Research, 2020
Usually, the concept of sufficient stability of a floating structure is connected with the capaci... more Usually, the concept of sufficient stability of a floating structure is connected with the capacity to keep a small heel angle despite the moment of heeling. The variable responsible for these characteristics is the initial metacentric height, which is the relation between the hydrostatic features of the pontoon and the mass properties of the entire object. This article answers the questions of how heavy the floating system should be, what the minimum acceptable draft is, and whether it is beneficial to use internal fixed ballast. To cover various technologies, a theoretical model of a cuboid float with average density representing different construction materials was analysed. The results indicate that the common practice of using heavy and deep floating systems is not always reasonable. In the case of floating buildings, which, unlike ships, can be exploited only under small heel angles, the shape and width of the submerged part of the object may influence the stability more than ...
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Polish Maritime Research
The paper presents a framework for optimising a sailing yacht rig using Multi-objective Evolution... more The paper presents a framework for optimising a sailing yacht rig using Multi-objective Evolutionary Algorithms and for filtering obtained solutions by means of a Multi-criteria Decision Making method. A Bermuda sloop with discontinuous rig is taken under consideration as a model rig configuration. It has been decomposed into its elements and described by a set of control parameters to form a responsive model which can be used for optimisation purposes. Considering the contradictory nature of real optimisation objectives, a multi-objective approach has been chosen to address this issue. Once the optimisation process is over, a Multi-criteria Decision Making method based on a w-dominance relation is applied for filtering out the most interesting solutions from the obtained Pareto set. The proposed method has been implemented, and selected results are provided and discussed.
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Polish Maritime Research
Recently, there has been a significant development of ecological propulsion systems, which is in ... more Recently, there has been a significant development of ecological propulsion systems, which is in line with the general trend of environmentally friendly “green shipping”. The main aim is to build a safe, low-energy passenger ship with a highly efficient, emission-free propulsion system. This can be achieved in a variety of ways. The article presents the main problems encountered by designers and constructors already at the stage of designing the unit. The research conducted made it possible to create a design with an effective shape of the hull, with the prospect of an energy-efficient and safe propulsion system with good manoeuvrability. The scope of the research included towing tank tests, recalculation of the results in full-scale objects and a prediction of the energy demand of the propulsion system. The results obtained were compared to indicate power supply variants depending on the hull shape.
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Mechanik
Typical ship designing is an iterative method based on the accumulated experience of already buil... more Typical ship designing is an iterative method based on the accumulated experience of already built ships. In the case of a completely new type of ship, without the „dowry of previous experience”, the design consists in developing a series of parallel variant solutions using the optimization. The paper identifies selected designing methods applying the optimizations used in the preliminary ship design. The optimization methods used in the ship design are discussed.
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Mechanik
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Polish Maritime Research, May 1, 2018
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Polish Maritime Research, 2017
Dynamic development in practically all fields of science and engineering has not passed over ship... more Dynamic development in practically all fields of science and engineering has not passed over shipbuilding. In last years , engineers got to their use computer software which makes it possible to perform strength and hydrodynamic calculations as well as to visualize design projects in 3 D space [1-4]. At their disposal they have full spectrum of modern solutions associated with the use of advanced materials and technologies [5-7]. More and more attention is also paid to impact onto the natural environment [8,9]. Every new object must influence the environment as low as possible, beginning from building phase through its service life up to final utilization – such approach is called „green-shipping”. However, not only practical reasons are important. Clients, i.e. ship owners and passengers of ships paid more and more attention
to image of floating units. During decision taking on that from whom a transport service has to be ordered, the most modern ships of an attractive image matching with place and time, are often taken into consideration. Such situation has become a basis for an idea of working out a concept of a new ferryboat for National Maritime
Museum. As the ferry has to navigate in „the heart of the town”, then, apart from strictly marine and engineering aspects, an important factor of its designing is its expected image - a set of significant meanings and emotions written in architecture language. The new ferryboat, like its historical predecessors, will never leave urban water routes.
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An Analysis of the Relationship between the Architecture and the Structure of a Vessel on the Example of the Reconstruction Design Process of the Historical Sailing Yacht "General Zaruski" Carried Out between 2009 and 2012, Apr 2015
The article analyzes the relationship between the architecture and the structure of a vessel on t... more The article analyzes the relationship between the architecture and the structure of a vessel on the example of the reconstruction design of the wooden sailing yacht “General Zaruski” built in Ekanӓs, Sweden, in 1939. The case study was based on the documentation of “Kaparen” (sister yacht), “Młoda Gwardia” (ex "General Zaruski") and the reconstruction classification project made by the authors. The impact of functional, spatial and aesthetic design objectives (e.g. interior integration, stability amendment, restoring the original exterior styling) on the yacht’s structure as well as influence of structural conditions (e.g. type and dimensions of the structure) on her architecture have been proved.
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Conference Presentations by Artur Karczewski
The 2nd International Conference on Amphibious Architecture, Design and Engineering, 2017
The design and construction of the aquatic structures - water-related built forms of architectura... more The design and construction of the aquatic structures - water-related built forms of architectural relevance is a wide field of action for many creative and engineering professions like architecture, hydraulic, offshore and naval, to name the main ones. Due to a substantial growth of the aquatic sector, these specialists more often start to work together on the new interdisciplinary projects and bring their own jargons and classifications into their design teams. This cooperation results in not only new forms of hybrid aquastructures, but also shows that definitions and typologies of different origins do not blend smoothly into one clear image of aquatecture. The aim of this paper is to propose the new common interdisciplinary typology by organizing existing types used in architectural, offshore and marine design. Using the buoyancy, foundation type and mobility as the basic organizing factors, the following array of aquatic structures was defined: (1) non-buoyant ground-based: inundatable and overwater; (2) buoyant hybrid: can-float, gravity-based and self-elevating; (3) buoyant water-based: floaters, conveyors and vessels. Where suitable, different examples for land, inland waters and offshore applications were given. In conclusion, the central position of amphibious architecture as a fusion between naval and civil design is discussed as well as the problem of distinguishing between the ships’ mobility and the floaters’ redeployability. This new approach covering structures of different environments, functions and sizes ranging from a terp-house to a single-handed live-aboard sailboat, from a boathouse to a lightship and from a stilt pension to a cruise ship may be useful not only for interdisciplinary research and design but also for adequating the existing legislation.
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Drafts by Artur Karczewski
Papers by Artur Karczewski
to image of floating units. During decision taking on that from whom a transport service has to be ordered, the most modern ships of an attractive image matching with place and time, are often taken into consideration. Such situation has become a basis for an idea of working out a concept of a new ferryboat for National Maritime
Museum. As the ferry has to navigate in „the heart of the town”, then, apart from strictly marine and engineering aspects, an important factor of its designing is its expected image - a set of significant meanings and emotions written in architecture language. The new ferryboat, like its historical predecessors, will never leave urban water routes.
Conference Presentations by Artur Karczewski
to image of floating units. During decision taking on that from whom a transport service has to be ordered, the most modern ships of an attractive image matching with place and time, are often taken into consideration. Such situation has become a basis for an idea of working out a concept of a new ferryboat for National Maritime
Museum. As the ferry has to navigate in „the heart of the town”, then, apart from strictly marine and engineering aspects, an important factor of its designing is its expected image - a set of significant meanings and emotions written in architecture language. The new ferryboat, like its historical predecessors, will never leave urban water routes.