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The influence of centre bow length on slamming loads and motions of large wave-piercing catamarans


Shahraki, JR and Thomas, GA and Davis, MR, The influence of centre bow length on slamming loads and motions of large wave-piercing catamarans, Royal Institution of Naval Architects. Transactions. Part A. International Journal of Maritime Engineering, 160 pp. 57-69. ISSN 1479-8751 (2018) [Refereed Article]

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DOI: doi:10.3940/rina.ijme.2018.a1.451


The effect of various centre bow lengths on the motions and wave-induced slamming loads on wave-piercing catamarans is investigated. A 2.5 m hydroelastic segmented model was tested with three different centre bow lengths and towed in regular waves in a towing tank. Measurements were made of the model motions, slam loads and vertical bending moments in the model demi-hulls. The model experiments were carried out for a test condition equivalent to a wave height of 2.68 m and a speed of 20 knots at full scale. Bow accelerations and vertical bending moments due to slamming showed significant changes with the change in centre bow, the longest centre bow having the highest wave-induced loads and accelerations. The increased volume of displaced water which is constrained beneath the bow archways is identified as the reason for this increase in the slamming load. In contrast it was found that the length of centre bow has a relatively small effect on the heave and pitch motions in slamming conditions.

Item Details

Item Type:Refereed Article
Keywords:High-speed catamarans, hull form
Research Division:Engineering
Research Group:Maritime engineering
Research Field:Marine engineering
Objective Division:Environmental Management
Objective Group:Marine systems and management
Objective Field:Marine systems and management not elsewhere classified
UTAS Author:Shahraki, JR (Mr Jalal Rafieshahraki)
UTAS Author:Davis, MR (Professor Michael Davis)
ID Code:152082
Year Published:2018
Web of Science® Times Cited:2
Deposited By:Information and Communication Technology
Deposited On:2022-08-11
Last Modified:2022-08-11

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