Integrated design of an eco-friendly wooden passenger craft for inland navigation

2020 AEIT International Annual Conference (AEIT)

Marinò

et al. 2020

Nowadays specific ships are used to train students as sailors. As historical vessels are conveniently employed to this aim, the average age of these ships is usually high. In order to amortize operating and maintenance costs, the training ships' ownership (except for naval ones) is shared among multiple entities and schools. Moreover, generally these vessels are used in coastal navigation. The consequent operational profile imposes the need to rearrange the ship internal spaces according to the shipowner who will use it. Considering all these reasons, a modular design approach can be adopted in the refitting process, while reverse engineering techniques and integrated design tools should be used for the reconstruction when the original technical documentation is not available. In this context, hybrid-electric propulsion systems can be proposed as effective to enable the Zero Emission Mode, thus reducing the vessel's environmental impact during the training. By doing this, three goals are achieved to extend the ship operational life: ease of rearrangement of the internal spaces for different uses, reduction of operating/maintenance costs and eco-sustainability in coastal navigation. In this paper, after a description about modular design and hybrid electric technologies, the refitting project of the M/N "Umberto d'Ancona" is discussed. The latter is the training ship of "Tomaso di Savoia Duke of Genoa", the nautical institute in Trieste, Italy.

Section: A Operational Configurations and Contextmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Application of Modular Design in the Refitting of a Hybrid-electric Propelled Training Ship

Braidotti

2020 AEIT International Annual Conference (AEIT)

Marinò

et al. 2020

“…To reduce air pollution, the endothermic engines can be replaced by greener propulsion systems. In this context, hybrid-electric [5] and full-electric [6] boats can be designed and deployed. Besides, the energy efficiency of the small crafts can be enhanced with a proper design of hull forms from the early design stage [7].…”

Section: Introductionmentioning

confidence: 99%

A Methodology for the Hull Forms Design of a Passenger Catamaran for the Venice Lagoon

Braidotti

Progress in Marine Science and Technology

Zanin

et al. 2022

The proper definition of the main geometric coefficients and the hull forms of a passenger catamaran must be carried out from the early design stage, due to its strong impact on the resistance, propulsion and the generated wave pattern. This is a primary concern especially in fragile environments, such as the Venice Lagoon, where waves increase erosion phenomena. In this work, a two-phase methodology for the definition of the hull forms of a passenger catamaran, based on both a parametric and CFD analysis, is presented. In the first phase, systematic series data are used to parametrically evaluate possible combinations of main hull dimensions (breadth of the demi hull, deadrise angle), selecting the best one to fit a specific operative scenario (minimisation of required energy). Then, after the validation of mesh parameters with a benchmark hull, the best hull forms are assessed through CFD simulations. To study the interference between the two hulls and select the proper configuration two different distances of the demi hulls are investigated. The methodology has been applied to the preliminary design of a 10 m passenger catamaran for the Venice Lagoon. Routes from the city centre to Marco Polo Airport or Torcello Island have been considered.

“…Thus, in order to follow the increasingly important trend of minimising environmental impact and promoting sustainable development in the boatbuilding industry [16], the introduction of both eco-friendly materials and construction technologies is necessary. introduction of both eco-friendly materials and construction technologies is necessary.…”

Section: Introductionmentioning

confidence: 99%

Bio-Based Adhesives for Wooden Boatbuilding

Corigliano

Crupi

et al. 2020

JMSE

Self Cite

The aim of the present investigation was to assess the behaviour of strip-planked parts by comparing wooden specimens glued using two different bio-based adhesives with wooden specimens glued using a conventional epoxy resin generally used in boatbuilding. Experimental tests in accordance with UNI EN standards were performed in order to evaluate mechanical properties such as tensile strength, shear strength, elastic modulus and shear modulus. In addition, compression shear tests were performed in order to assess the shear modulus of the adhesives. The obtained results demonstrate that the mechanical properties of the investigated bio-based adhesives are comparable to, and sometimes better than, the conventional epoxy resin. Moreover, the experimental results give useful information for the design of wooden boats when the strip-planking process is used. Furthermore, a new procedure to assess the shear modulus of elasticity and shear strength, using the application of compression loadings, was proposed. The results were compared to standard lap-joint tests and showed even lower dispersion. Consequently, the testing procedure proposed by the authors is valid to assess shear properties under compression loading, and it can be applied in most laboratories since it involves the use of common testing devices.