Crest of the Royal National Institution of Naval Architects - Click to return to the homepage


MarintechChina Until June 2022

Hybrid Expo

SMM May_June 2022


International Registries May 2022

Air Products May 2022

IJME 522

Paper Title: Study of Airflow Around Ship with Rigid Sail Array and Potential Array Propulsive Power 



I Almallah, J Lavroff, D S Holloway and M R Davis University of Tasmania, Australia


Wave-piercing catamaran hull forms are widely used for high-speed ferry applications due to the hull slenderness, suitable for achieving high speeds. The global loads acting on these craft are of great interest as there is limited knowledge on determining the magnitude of the loads, in particular when operating in random sea conditions. Longitudinal and transverse bending moments as well as pitch connecting moments and hull torsion loads act on the hull simultaneously. This paper investigates the estimation of these global loads from full-scale catamaran sea trials strain gauge data using finite element methods. Det Norske Veritas (DNV) load cases are applied to a finite element model in order to determine the conversion between local strain values observed during sea trials and prevailing global loads. Comparisons are thus made of global loads determined from strain data collected from sea trials with DNV global load cases. The results show that this method is relatively reliable for the prediction of hull global loads in the absence of slamming. Comparisons have been made for different heading angles. The quasi-static design loads are important during the ship design stage, as they are good proxies in wavelengths comparable to the hull length for rationally determined loads obtained from a first-principles dynamic analysis. The broad aims here are to demonstrate the use of strain sensor data obtained during sea trials for determination of global sea loads, to reconcile the loads thus determined with DNV load cases and thereby to improve the accuracy of the predicted loads used in design to increase the structural efficiency of vessel design.



Transactions RINA, Vol 161, Part A2, International Journal Maritime Engineering, Apr - Jun 2019 

DOI Number

DOI No: 10.3940/rina.ijme.2019.a2.522

Search and Order IJME papers

All International Journal of Maritime Engineering (IJME) papers are listed in the RINA Publications Database. You can search the database by author name and paper title. Publications may be ordered and paid for online. Other publications are also listed, some of which may be downloaded free of charge. Follow the link to Search Publications & Order.

RINA membership

Cyber Security On Demand Button


Teinbridge Propeller

Euronaval Apr - Oct 2022

Uni Stratchclyde June 2021

Metstrade May 2022