Catamaran wetdeck slamming has been experimentally investigated using a servo hydraulic slam testing system. A series of controlled-speed water impacts was undertaken on a rigid catamaran bow section with two interchangeable centrebows. Entry into the body of water was at two fixed trim angles: 0° and 5°. The vertical velocity was varied from 3 to 5 m/s in 0.5 m/s increments. This study presents a new dataset of pressure distributions and slam forces on the arched wetdeck structure of catamaran vessels. The relationships between the peak force magnitudes, relative impact angle and vertical velocity are observed, with a small reduction in slam force for an amended centrebow. Limited pressure measurements along the archway were not found to be representative of wetdeck slamming loads.

Item Type:	Refereed Article
Keywords:	catamaran, water impact, wetdeck slam, hydrodynamic loads, slamming force, pressure distribution
Research Division:	Engineering
Research Group:	Maritime engineering
Research Field:	Ship and platform structures (incl. maritime hydrodynamics)
Objective Division:	Transport
Objective Group:	Water transport
Objective Field:	Domestic passenger water transport (e.g. ferries)
UTAS Author:	Swidan, A (Dr Ahmed Swidan)
UTAS Author:	Penesis, I (Professor Irene Penesis)
UTAS Author:	Ranmuthugala, D (Professor Dev Ranmuthugala)
UTAS Author:	Amin, W (Dr Walid Amin)
ID Code:	114802
Year Published:	2017 (online first 2016)
Web of Science® Times Cited:	13
Deposited By:	NC Maritime Engineering and Hydrodynamics
Deposited On:	2017-02-27
Last Modified:	2018-03-29
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