Advanced Techniques for Design and Manufacturing in Marine Engineering

Mancuso, Antonio; Tumino, Davide

doi:10.3390/jmse10020122

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…. The 3-DOF model [43] of the AUV is described as follows: Since the horizontal motion of an AUV is described by the motion components in surge, sway and yaw, the state vectors are chosen as v = [u, v, r] T , η = [N, E, ψ] T . The 3-DOF model [43] of the AUV is described as follows:…”

Section: Simulation Model Of Auv and Sonarmentioning

confidence: 99%

AUV Collision Avoidance Planning Method Based on Deep Deterministic Policy Gradient

Yuan,

Han,

Wang

et al. 2023

JMSE

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Collision avoidance planning has always been a hot and important issue in the field of unmanned aircraft research. In this article, we describe an online collision avoidance planning algorithm for autonomous underwater vehicle (AUV) autonomous navigation, which relies on its own active sonar sensor to detect obstacles. The improved particle swarm optimization (I-PSO) algorithm is used to complete the path planning of the AUV under the known environment, and we use it as a benchmark to improve the fitness function and inertia weight of the algorithm. Traditional path-planning algorithms rely on accurate environment maps, where re-adapting the generated path can be highly demanding in terms of computational cost. We propose a deep reinforcement learning (DRL) algorithm based on collision avoidance tasks. The algorithm discussed in this paper takes into account the relative position of the target point and the rate of heading change from the previous timestep. Its reward function considers the target point, running time and turning angle at the same time. Compared with the LSTM structure, the Gated Recurrent Unit (GRU) network has fewer parameters, which helps to save training time. A series of simulation results show that the proposed deep deterministic policy gradient (DDPG) algorithm can obtain excellent results in simple and complex environments.

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Section: Simulation Model Of Auv and Sonarmentioning

confidence: 99%

AUV Collision Avoidance Planning Method Based on Deep Deterministic Policy Gradient

Yuan,

Han,

Wang

et al. 2023

JMSE

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“…The sizing focuses on the selection of the main dimensions of the unit (length, breadth, draught, and a preliminary estimate of displacement), the style is the design theme of the yacht, which means, as an example, if it is a conventional bow, vertical bow, a sport yacht or an explorer unit (Ansaloni et al, 2024). Subsequently, all the decisions concerning the propulsion system (conventional, podded or hybrid electric solutions) and the definitive hull design need to be taken, before considering the definitive internal layout and the aesthetic of the external shape and interiors (Mancuso & Tumino, 2022, Mauro et al 2021a). However, for the specific case of concept design, the most essential part is to determine the sizing of the vessel, which means choosing the best combination of hull dimensions leading to a given displacement and granting the achievement of some performance criteria concerning relevant attributes for the vessel (Papanikolaou, 2014, Papanikolaou et al, 2022.…”

Section: Introductionmentioning

confidence: 99%

The effect of main dimensions on the preliminary design of motor yachts

Mauro,

Begovic,

Della Valentina

et al. 2024

IMDC

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The design process of motor yachts mainly relies on the experience of designers, who have confidence in the knowledge acquired from designing units with similar hull-form characteristics. However, once a new concept needs to be developed, the acquired experience on a standard platform is no longer sufficient to achieve in a short time a successful design. The design of a motor yacht implies considering multiple aspects of ship hydrodynamics: resistance, propulsion, seakeeping, and manoeuvring. Such factors have been widely discussed individually on different kinds of ships, but an appropriate joint investigation of hulls like motor yachts is missing in the open literature. Therefore, the present paper intends to cover this gap, providing guidelines for the design of motor yachts in a length range between 20 and 40 meters. As a preliminary study, a series of 15 yacht hulls has been developed, starting from a reference hull form. Seakeeping, manoeuvring, and propulsive performances have been evaluated at a reference environmental condition and speeds according to the ISO 22834:2022 guidelines. Such calculations allow for developing response surfaces of the hydrodynamic properties for the series of yachts as a function of the hull's main dimensions. As a final result, the obtained responses allow for identifying the best compromise solutions for the main dimension selection of a new motor yacht in the length range of 20-40 meters.

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Yachting's Role in Advancing Sustainable Eco Logistics

Mitkov,

Dovramadjiev

2023

XVII. International Conference on Logistics in Agriculture 2023

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This article provides an experience of sailing yachting with a focus on sustainable logistics, transport, and renewable energy. It actively encourages young people and stakeholders to embrace these concepts to protect our environment. This comprehensive article underscores the pivotal social impact of yachting's evolution. It actively educates and engages people by offering eco-tourism experiences that provide insights into sustainable green nature protection and the challenges posed by climate change. This educational aspect is fundamental to fostering a deeper understanding of how logistics impacts both the environment and society. The article presents successfully realized events and activities that attracted people of different interests, ages, and nationalities. Special attention is given to disadvantaged children, who are presented with the positive experience of how modern eco-technological transports such as sailing yachting powered by ecological solar, wind and water energy can interact with an emphasis on nature conservation. At the same time, sharing experiences with young people further promotes their motivation for a fulfilling life in line with responsibility towards nature. The article presents a full extended paper that covers a range of positive practices beneficial to stakeholders.

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Advanced Techniques for Design and Manufacturing in Marine Engineering

Abstract: Modern engineering design processes are driven by the extensive use of numerical simulations, and naval architecture as well as ocean engineering are no exception [...]

Cited by 3 publications

References 11 publications

AUV Collision Avoidance Planning Method Based on Deep Deterministic Policy Gradient

AUV Collision Avoidance Planning Method Based on Deep Deterministic Policy Gradient

The effect of main dimensions on the preliminary design of motor yachts

Yachting's Role in Advancing Sustainable Eco Logistics

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