Papers of Significance

Each year, outstanding papers of significance to the European maritime industry, written by members of each CEMT Society, are published on the CEMT website. View all papers (Dropbox).


Experimental Testing of Scarf Joints and Laminated Timber for Wooden Boatbuilding Applications
By: J-B R G Souppez
Paper selected by the Royal Institution of Naval Architects

  • This paper employs destructive testing to tackle two distinct cases. On the one hand, the strength of plain scarf joints as a function of their slope is evaluated. On the other hand, the effectiveness of a range of adhesives is ascertained for the purpose of laminated manufacturing. The results are compared to both solid wood and the mechanical properties assumed by modern scantling regulations, revealing significant differences

Reliability based structural design of river–sea tankers: Still water loading effects 
By: Milorad Motok, Nikola Momcilovic, Stefan Rudakovic
Paper selected by the Society of Naval Architects of Serbia

  • This paper uses probability approach to estimate the reliability index of Rule based formulas for still water bending moment, i.e., the probability that thus obtained values will not be overcome by actual, lege artis calculated values. It is based on analyses of more than 400 load cases of 37 prominent river-sea tankers. Acquired results are also input parameters for further analyses, which would include wave induced loads and are the subject of succeeding investigations.

Mixed-Fidelity Design Optimization of Hull Form Using CFD and Potential Flow Solvers
By: G. J. Grigoropoulos, C. Bakirtzoglou, G. Papadakis, and D. Ntouras
Paper selected by the Hellenic Institute of Marine Technology

  • This paper proposes a new mixed-fidelity method to optimize the shape of ships using genetic algorithms (GA) and potential flow codes to evaluate the hydrodynamics of variant hull forms, enhanced by a surrogate model based on an Artificial Neural Network (ANN) to account for viscous effects.


A real time speed modulation system to improve operational ability of autonomous planing craft in a seaway 
By: H Allaka, A Levy, D Levy, T Triebitz and M Groper
Paper selected by the Royal Institution of Naval Architects

  • This study focuses on developing a control system to enhance the seaworthiness of Autonomous high-speed Planing Crafts (APCs). APCs operating at high-speed in a seaway encounter very high vertical accelerations which pose a hazard to payload and crafts' structural integrity. Therefore, for safety operation of APCs in a seaway it is proposed to employ a system termed vision-aided speed modulation system (VSMS). 

Safety of autonomous inland vessels: An analysis of regulatory barriers in the present technical standards in Europe
By Igor Bačkalov.
Paper selected by the Society of Naval Architects of Serbia

  • This paper presents an analysis of technical regulations addressing the safety of inland cargo vessels in Europe, in light of the developments leading towards the introduction of autonomous ships in inland navigation.

Damage Stability of River Cruisers: A Case for Harmonization of International Regulations
By: I Bačkalov and M Vidić.
Paper selected by the Society of Naval Architects of Serbia

  • Rapid growth of the river cruising industry brings the safety of inland passenger ships into spotlight. A review of the existing safety regulations, however, exposes the fact that a common international regulatory framework for inland vessels currently does not exist. The paper presents damage stability assessment of a state-of-the-art European inland passenger vessel (the so-called river cruiser) performed according to the requirements of the regulations which are presently in force in Europe and worldwide.

The Digital Twin in the Marine & Offshore Industry: One concept, multiple adaptations  
By: Jose Esteve
Paper selected by the Association Technique Maritime et Aéronautique

  • Nowadays the term “Digital Twin” is seen very frequently in presentations, teasers and brochures. But what does it really imply? The proposed paper will look at the different proposals of “Digital Twin” that can be seen currently promoted for the Marine & Offshore industry and try to clarify the differences between them, both in content and their expected purpose. As a point of reference Bureau Veritas will present their proposed meaning to “Digital Twin”, illustrated by their initiatives around Asset Integrity Management and 3D Digital Classification. The author does not attempt to be exhaustive in all the possible uses of “Digital Twin” but expect to cover a sufficient range and points of comparison to help the readers to evaluate if a “Digital Twin” fits their needs better than another “Digital Twin”


The Sophistication Of Early Stage Design For Complex Vessels 
By: Professor D Andrews. 
Paper selected by the Royal Institution of Naval Architects

  • It is considered that this paper, which was a synthesis of his previously published research on ship design, was a seminal paper which sets the benchmark for ship designers looking to exploit new technology and techniques. As such, the paper was considered to be essential reading for all naval architects and marine engineers, and not just those working in concept design

Improving the nautical performance of a surface ship with the Hull Vane® appendage
By: Hugo Ferré; Philippe Goubault; Camille Yvin; Bruno Bouckaert
Paper selected by the Association Technique Maritime et Aéronautique

  • The optimization of propulsive performance of ships is a primary and daily issue during design phases. For combat ships, the constant search for increasing operability through the improvement of seakeeping performance, acoustic discretion and manoeuvring ability is also a concern. For this reason, Naval Group studied the hydrodynamic impacts of the integration of the appendage Hull Vane® on a monohull. The appendage has been designed and optimized specifically for this hull, then compared by CFD computations with several geometries of more classic aft appendages such as wedges, interceptors and flaps. Significant gains on resistance and propulsive power were obtained, and exceeded largely what is obtained with more classic stern appendages. This analysis was completed by model tests, with and without the Hull Vane®