Resistance analysis of unsymmetrical trimaran model with outboard sidehulls configuration

Yanuar, Gunawan, M. A. Talahatu, Ragil T. Indrawati, A. Jamaluddin

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


The application of multi-hull ship or trimaran vessel as a mode of transports in both river and sea environments have grown rapidly in recent years. Trimaran vessels are currently of interest for many new high speed ship projects due to the high levels of hydrodynamic efficiency that can be achieved, compared to the mono-hull and catamaran hull forms. The purpose of this study is to identify the possible effects of using an unsymmetrical trimaran ship model with configuration (S/L) 0.1-0.3 and R/L=0.1-0.2. Unsymmetrical trimaran ship model with main dimensions: L=2000mm, B=200 mm and T=45 mm. Experimental methods (towing tank) were performed in the study using speed variations at Froude number 0.1-0.6. The ship model was pulled by an electric motor whose speed could be varied and adjusted. The ship model resistance was measured precisely by using a load cell transducer. The comparison of ship resistance for each configuration with mono-hull was shown on the graph as a function of the total resistance coefficient and Froude number. The test results found that the effective drag reduction could be achieved up to 17% at Fr=0.35 with configuration S/L=0.1.

Original languageEnglish
Pages (from-to)293-297
Number of pages5
JournalJournal of Marine Science and Application
Issue number3
Publication statusPublished - Sept 2013


  • drag reduction
  • ship resistance
  • stagger
  • trimaran model
  • unsymmetrical hull


Dive into the research topics of 'Resistance analysis of unsymmetrical trimaran model with outboard sidehulls configuration'. Together they form a unique fingerprint.

Cite this