Dual-Use Short Sea Shipping Trimaran Trailership HSTT-180

Saal, R. J. Vom; Mizine, Igor; Deschamps, Laurent; Thorpe, Richard W.

doi:10.5957/mt1.2005.42.3.132

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…Kretschmann [21] also presents the required freight rate (RFR) as an indicator of economic effectiveness. RFR is the aggregated cost of owning and operating a vessel divided by total cargo tonnage over a specific period of time [60]. RFR is a freight rate, which produces a zero net present value over the assumed life of the ship [61].…”

Section: Sensitivity Analysis Of a Life-time Cost Assessmentmentioning

confidence: 99%

Costs and Benefits of Autonomous Shipping—A Literature Review

Ziajka-Poznańska

Montewka²

2021

Applied Sciences

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The development of autonomous ship technology is currently in focus worldwide and the literature on this topic is growing. However, an in-depth cost and benefit estimation of such endeavours is in its infancy. With this systematic literature review, we present the state-of-the-art system regarding costs and benefits of the operation of prospective autonomous merchant ships with an objective for identifying contemporary research activities concerning an estimation of operating, voyage, and capital costs in prospective, autonomous shipping and vessel platooning. Additionally, the paper outlines research gaps and the need for more detailed business models for operating autonomous ships. Results reveal that valid financial models of autonomous shipping are lacking and there is significant uncertainty affecting the cost estimates, rendering only a reliable evaluation of specific case studies. The findings of this paper may be found relevant not only by academia, but also organisations considering to undertake a challenge of implementing Maritime Autonomous Surface Ships in their operations.

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Section: Sensitivity Analysis Of a Life-time Cost Assessmentmentioning

confidence: 99%

Costs and Benefits of Autonomous Shipping—A Literature Review

Ziajka-Poznańska

Montewka²

2021

Applied Sciences

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Free roll decay modeling of a trimaran based on least square support vector machine

Pang

Yang

2012

2012 Oceans

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A trimaran is a multihulled boat consisting of a main hull and two smaller outrigger hulls, attached to the main hull with lateral struts. There have been many studies highlighting that a trimaran takes many advantages over other types of hulls especially the roll performance, because of the greater resistance to rolling that the outrigger hulls offer. In order to study the rolling motion of a trimaran, an accurate roll motion model is needed. The rolling motion of a trimaran is inherently nonlinear due to both nonlinearities in the restoring moment and damping moment. This paper presents an estimation method to predict the linear and nonlinear roll damping parameters based on free roll decay experiments of a trimaran, whose outrigger hulls are movable both along the longitudinal and transverse direction. The estimation method is based on least square support vector regression (LS-SVR) theory. In order to verify the performance of this new estimation method, the least square (LS) estimation method is also applied to identify the parameters. Both methods show satisfying performances, however models generated by LS-SVR shows less accumulated errors than models generated by LS.Index Terms-trimaran; free roll decay; support vector regression; least square

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Dual-Use Short Sea Shipping Trimaran Trailership HSTT-180

Cited by 2 publications

References 2 publications

Costs and Benefits of Autonomous Shipping—A Literature Review

Costs and Benefits of Autonomous Shipping—A Literature Review

Free roll decay modeling of a trimaran based on least square support vector machine

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