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View article: Impact of Hydrofoil Shaped Imperfections on Lift and Drag Characteristics
Impact of Hydrofoil Shaped Imperfections on Lift and Drag Characteristics Open
This paper examines the impact of production imperfections on the lift and drag characteristics of hydrofoils, in order to ensure equal opportunities for racing athletes. To achieve this research objective, 18 regatta class approved hydrof…
View article: A Feasibility Study of Debonding Detection in Multi-Layered Marine Thin-Wall Structures Using a Non-Destructive Vibration-Based Approach
A Feasibility Study of Debonding Detection in Multi-Layered Marine Thin-Wall Structures Using a Non-Destructive Vibration-Based Approach Open
This study analyses different debonding defect scenarios on a multi-layered material composed of carbon fibre-reinforced polymer as a composite coating applied to structural steel, with the aim of applying it to marine structures. The stud…
View article: Use of the AHP Method for Preference Determination in Yacht Design
Use of the AHP Method for Preference Determination in Yacht Design Open
A sailing yacht is a human-centred product, the design of which revolves primarily around the wants and desires of the future owner. In most cases, these preferences are not measurable, such as a personal aesthetic feeling, or a need for c…
View article: The AHP method as a yacht design support used to determine sailing yacht owners' preferences for deck equipment.
The AHP method as a yacht design support used to determine sailing yacht owners' preferences for deck equipment. Open
A sailing yacht is a human-centred product which design revolves primarily around the wants and desires of her future owner. These preferences are in most cases immeasurable e.g., the personal aesthetic feeling, a need of comfort, speed, s…
View article: A framework estimating the minimum sample size and margin of error for maritime quantitative risk analysis
A framework estimating the minimum sample size and margin of error for maritime quantitative risk analysis Open
The average accident frequency is essential for quantitative risk analysis and is conventionally estimated from accident statistics. This paper has systematically synthesised the knowledge on statistical errors and offered the missing inst…
View article: Four Degree-of-Freedom Hydrodynamic Maneuvering Model of a Small Azipod-Actuated Ship With Application to Onboard Decision Support Systems
Four Degree-of-Freedom Hydrodynamic Maneuvering Model of a Small Azipod-Actuated Ship With Application to Onboard Decision Support Systems Open
The main contribution of this paper is a numerical ship motion model of NTNU’s research vessel Gunnerus, capturing the surge, sway, roll, and yaw dynamics when sailing in uniform and steady currents. The model utilizes a crossflow drag for…
View article: Effect of Hydrofoils’ Twist on the Lift-Drag Characteristics Based on Serial Production Sampling
Effect of Hydrofoils’ Twist on the Lift-Drag Characteristics Based on Serial Production Sampling Open
Hydrofoils are designed to achieve specified characteristics, but in most cases, the final product is not an ideal representation of the design.In the case of racing sailing, where hydrofoils are made of composite materials, competitors cl…
View article: An updated method identifying collision-prone locations for ships. A case study for oil tankers navigating in the Gulf of Finland
An updated method identifying collision-prone locations for ships. A case study for oil tankers navigating in the Gulf of Finland Open
Funding Information: The work is supported by SIMREC project. The South-East Finland-Russia CBC 2014-2020 programme is the main contributor. Publisher Copyright: © 2021 Elsevier Ltd
View article: The Development of a Combined Method to Quickly Assess Ship Speed and Fuel Consumption at Different Powertrain Load and Sea Conditions
The Development of a Combined Method to Quickly Assess Ship Speed and Fuel Consumption at Different Powertrain Load and Sea Conditions Open
Decision support systems (DSS) recently have been increasingly in use during ships operation. They require realistic input data regarding different aspects of navigation. To address the optimal weather routing of a ship, which is one of th…
View article: Preliminary Results of a System-theoretic Assessment of Maritime Autonomous Surface Ships’ Safety
Preliminary Results of a System-theoretic Assessment of Maritime Autonomous Surface Ships’ Safety Open
While a system-theoretic approach to the safety analysis of innovative socio-technical systems gains a growing acceptance among academia, safety issues of Maritime Autonomous Surface Ships (MASS) remain largely unexplored. Therefore, we ap…
View article: A Ship Domain-Based Method of Determining Action Distances for Evasive Manoeuvres in Stand-On Situations
A Ship Domain-Based Method of Determining Action Distances for Evasive Manoeuvres in Stand-On Situations Open
A ship encounter can be considered safe if neither of ships’ domains (defined areas around ships) is intruded by other ships. Published research on this includes optimising collision avoidance manoeuvres fulfilling domain-based safety cond…
View article: Multi-Objective Weather Routing of Sailboats Considering Wave Resistance
Multi-Objective Weather Routing of Sailboats Considering Wave Resistance Open
The article presents a method to determine the route of a sailing vessel with the aid of deterministic algorithms. The method assumes that the area in which the route is to be determined is limited and the basic input data comprise the win…
View article: Prediction of Ship Resonant Rolling - Related Dangerous Zones with Regard to the Equivalent Metacentric Height Governing Natural Frequency of Roll
Prediction of Ship Resonant Rolling - Related Dangerous Zones with Regard to the Equivalent Metacentric Height Governing Natural Frequency of Roll Open
Potentially dangerous zones corresponding to dynamical stability phenomena, possibly encountered by ships sailing in rough sea, are estimated nowadays with the use of the method recommended by IMO in the guidance coded MSC.1/Circ.1228. In …
View article: Method for ship’s rolling period prediction with regard to non-linearity of GZ curve
Method for ship’s rolling period prediction with regard to non-linearity of GZ curve Open
The paper deals with the problem of prediction of the rolling period. A special emphasis is put on the practical application...
View article: Towards the Development of a Risk Model for Unmanned Vessels Design and Operations
Towards the Development of a Risk Model for Unmanned Vessels Design and Operations Open
An unmanned merchant vessel seems to be escaping from the stage of idea exploration. Once the concept proofs its safety, it may become a part of maritime reality. Although the safety aspect of such a ship has been addressed by a handful of…
View article: Assessment of a critical area for a give-way ship in a collision encounter
Assessment of a critical area for a give-way ship in a collision encounter Open
Evasive action in ship-ship encounter has to be carried out on time and in line with the international convention on collision regulation – COLREG. The convention not only includes a set of rules defining types of relations between encount…
View article: Variations of Ship’s Deck Elevation Due to Stochastic Process of Containers Loading
Variations of Ship’s Deck Elevation Due to Stochastic Process of Containers Loading Open
The stochastic process of container loading is described in the paper with special emphasis to ship motion when she is lying at a quay. The 3 DOF system was applied to describe rolling, pitching and heaving of a vessel which may cause a si…