Voyage optimization for a Very Large Crude Carrier oil tanker: a regional voyage case study
Treść / Zawartość
In line with the ambition of ship-owners to preserve capital and reduce operational costs, the selection of an optimum, safe and secure route for an envisaged voyage has always been a challenge for ship-owners, masters, and engineers. Due to the many complexities and parameters that affect the selection of an optimal route, the topic has become very interesting to many researchers. Each of the parameters affecting the process of route selection has its own values and weights, and these values change depending on specific situations and objectives. This sensitivity to context increases the difficulty selecting the optimum route. In this research, the optimization of a tanker-sized VLCC voyage for predefined and different routes is addressed in order to identify the optimum route. To reduce the number of variable parameters, major values have been assigned to the ship profile and sea conditions. The time domain analysis and the solution of equations of motion are then performed. The proposed route is designed by using a Bezier curve, and this route is then optimized with the objective of decreasing fuel consumption using the Fletcher-Powell method. The resulting optimized route shows a 3.7% savings in fuel consumption.
Bibliogr. 17 poz., rys., tab.
- Amirkabir University of Technology, Department of Maritime Engineering Tehran, Iran, firstname.lastname@example.org
- Amirkabir University of Technology, Department of Maritime Engineering Tehran, Iran, email@example.com
- Amirkabir University of Technology, Department of Maritime Engineering Tehran, Iran, firstname.lastname@example.org
- 1. CATALANI, M. (2009) Ship scheduling and routing optimization. An application to Western Mediterranean area. European Transport. 42. p.67–82.
- 2. CEPOWSKI, T. (2015) Initial considerations for operational parameters intended to minimize fuel consumption by ships in real weather condition. Scientific Journals of the Maritime University of Szczecin. 43 (115), pp. 9–14.
- 3. CHEN, H. (2013) Voyage Optimization Supersedes Weather Routing. Jeppesen Commercial Marine Journal.
- 4. FLETCHER, R. & POWELL, M.J.D. (1963) A rapidly convergent descent method for minimization. Computer Journal. 6. pp. 163–168.
- 5. FUJIWARA, T., UENO, M. & NIMURA, T. (2001) An estimation method of wind forces and moments acting on ships. Mini Symposium on Prediction of Ship Maneuvering Performance, 18 October, 2001. pp. 83–92.
- 6. IOC-UNESCO.
- 7. JOURNÉE, J.M.J. & MEJIJERS, J.H.C. (1980) Ship Routing for Optimum Performance. IME Transactions. pp. 1–17.
- 8. KARASUNO, K. et al. (2001) A component-type mathematical model of hydrodynamic forces in steering motion derived from a simplified vortex model (5). SNAJ. 190. pp. 169–180.
- 9. KOBAYASHI, E., ASAJIMA, T. & SUEYOSHI, N. (2011) Advanced Navigation Route Optimization for an Oceangoing Vessel. International Journal on Marine Navigation and Safety of Sea Transportation. 5. 3. September 2011.
- 10. NONAKA, K. et al. (1981) Experimental results of hydrodynamic hull force in shallow water. Report of RR-7 (annex), No. 150R, pp. 47–88.
- 11. OLTMANN, P. & SHARMA, S. (1984) Simulation of combinned engine and rudder man oeuvres using an improved model of hull-propeller-rudder interactions. Proc. of 15th symposium Naval Hydro-dynamics, pp.83–108.
- 12. ROH, M.-I. (2013) Determination of an economical shipping route considering the effects of sea state for lower fuel consumption. Int. J. Naval Archit. Ocean Eng. 5. 2. pp. 246–262.
- 13. SASAKI, N., MOTSUBARA, T. & YOSHIDA, T. (2008) Analysis of speed drop of large container ships operating in sea way. Conference Proceedings, The Japan Society of Naval Architects and Ocean Engineering, May 2008, Volume 6, pp. 9–12.
- 14. TAKASHINA, J. (1986) Ship maneuvering motion due to tugboats and its mathematical model. SNAJ. 160. pp. 101– 110.
- 15. YOSHIMURA, Y. (1988) Mathematical model for maneuvering ship motion in shallow water (2nd report) mathematical model at slow forward speed. KASNAJ. 210. pp. 77–84.
- 16. YOSHIMURA, Y. (2007) New mathematical model of hydrodynamic hull force in ocean and harbor maneuvering. Proc. of JASNAOE. 4. pp. 271–274.
- 17. YUMURO, A. (1987) Experimental results of hydro-dynamic hull force in large maneuvering motion. Report of MSS, No. 8–5.