Abstract
Trimaran has unique hull form with a rapidly growth in recent years due to its application as a mode of transports and naval vessels. Designing trimaran faces many technical challenges because of its complex structural outlines and high-speeds operation. This article investigates the influence of side hulls configuration (symmetric, inboard and outboard types) for wave loads on cross-deck of a trimaran ship when advancing at sea in regular waves. The computation of these hydrodynamic forces is carried out using MAESTRO-Wave 3D panel method code. This code is based on potential flow theory that uses Green’s function with the forward speed correction in the frequency domain. The results demonstrate that the outboard side hull form has the best performance on wave-induced load among three kinds of side hull forms. Furthermore, the results of this study offer more information for selecting the side hull form of the trimaran.
Highlights
High-speed on the sea with minimum power requirement has been a major design objective for a long time by marine engineers
Multi-hull ships due to its inherent advantages such as better seaworthiness, higher initial stability, broad open decks, better speed-power performance and safety are currently used as fast passenger transport and cargo ships, as naval operational vessels, and as leisure craft in austere harbours and regions characterized by harsh sea states
Trimaran is a multi-slenderhulled vehicle, which consists of a long slender main hull and two smaller symmetric or asymmetric outer hulls attached to the main hull by lateral strut that is usually referred to as a cross-structure or as a cross-deck
Summary
High-speed on the sea with minimum power requirement has been a major design objective for a long time by marine engineers. A rapid growth of interest in the development of high-speed multi-hull vessels for fast sea transportation has shown for both commercial and military purposes. Multi-hull ships due to its inherent advantages such as better seaworthiness, higher initial stability, broad open decks, better speed-power performance and safety are currently used as fast passenger transport and cargo ships, as naval operational vessels, and as leisure craft in austere harbours and regions characterized by harsh sea states. Trimaran is a multi-slenderhulled vehicle, which consists of a long slender main hull and two smaller symmetric or asymmetric outer hulls attached to the main hull by lateral strut that is usually referred to as a cross-structure or as a cross-deck. Because of its unique structure the trimaran configuration possesses several advantages over contemporary conventional monohull and other highspeed crafts:
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