Influence of the Hull Shape on the Energy Demand of a Small Inland Vessel with Hybrid Propulsion

Although the International Maritime Organization (IMO) introduced the energy efficiency requirements for ships more than a decade ago, to date, inland navigation has not been affected by corresponding regulations at all. Therefore, inland waterway vessels are left with no mandatory requirements that could push their technology into more energy efficient design. Fortunately, there are certain pioneering attempts to define energy efficiency criteria for inland vessels. This paper tries to gather and provide a review of such methods. Moreover, a typical Danube cargo inland vessel’s data are used to evaluate their current energy efficiency levels with respect to provisional criteria. Consequently, two methods are found and used here. They are both based on IMO’s energy efficiency concept but modified for the inland waterway vessels. The methods delivered a significant difference in applicability and were difficult to compare. Moreover, shallow and deep-water effects are explored in the same regard but provided unsound conclusions. The final results displayed discrepancies in energy efficiency levels for the same vessels and so the methodology should be improved and harmonised, if it is to be introduced as mandatory for inland waterway vessels. The analysis provided a glimpse into the current condition of the traditional design of the Danube inland fleet, with respect to the emerging energy efficiency policies.

Section: Methodsmentioning

confidence: 99%

“…Moreover, a high energy efficiency inland ferry concept was developed in [11], using hybrid propulsion. Similarly, the research in [12] explored hybrid propulsion as well, in addition to potential hull shape modification, to design a more energy efficient small inland passenger vessel.…”

Section: Introductionmentioning

confidence: 99%

Evaluating an Inland Waterway Cargo Vessel’s Energy Efficiency Indices

Kalajdžić

Vasilev²,

Momčilović

2022

“…The ship considered here was developed in 2015-2016 as part of a research project involving a new ferry for the National Maritime Museum in Gdańsk [8,9]. The goal of this project was to replace the previous ship, which had existed since 1975.…”

Section: Ship Designmentioning

confidence: 99%

Optimisation of the Energy Consumption of a Small Passenger Ferry with Hybrid Propulsion

Kunicka

2024

Self Cite

The main goal in the design phase is to create a safe ship with a very efficient (and preferably zero-emission) propulsion system. To obtain such ships, new concepts are being developed for both propulsion systems and individual components. The choice of a propulsion system is not straightforward. To optimise the selection of the propulsion system, it is valuable to optimise the energy demand of this unit, which can be done by creating operational movement profiles that indicate the differences in energy demand needed to cover the same route within similar times. Optimisation can be performed based on many different criteria, especially for crowded waterways, and can not only reduce the amount of energy needed to power the propulsion system but also increase navigational safety. In this work, optimisation is carried out by searching the space of all possible solutions, which allows for an in-depth analysis according to various criteria.

“…However, in such a design approach, extensive knowledge is required from a designer who invents and develops the design process. A basic approach for successful design, especially for small ships, must blend scientific knowledge with experiential wisdom and the possibility of a variety of choices, through bringing intuitive and generative processes to the endeavour [12].…”

Section: Introductionmentioning

confidence: 99%

A Generative Approach to Hull Design for a Small Watercraft

Karczewski

Kozak

2023

Self Cite

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.