Gasdorp

Greener Approach to Ship Design and Optimal Route Planning (GASDORP)

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Funded by: Croatian Science Foundation - HRZZ-IP-2013-11-8722

Principal researcher: Prof. Jasna Prpić-Oršić
Host institution: University of Rijeka, Faculty of Engineering, Rijeka, Croatia
Project duration: 2014-2018
Funding: Croatian Science Foundation (HRZZ-IP-2013-11-8722)

Contact
Prof. Jasna Prpić-Oršić, PhD
University of Rijeka, Faculty of Engineering
Department of Naval Architecture and Ocean Engineering
Vukovarska 58, 51000 Rijeka, Croatia
e. jasnapo@riteh.hr
t. +385 51 651 452

Project summary

The accurate calculation of attainable ship speed at actual sea is essential from economical and also environmental aspects. Reliable ship speed loss estimation under real environmental conditions allows a more accurate prediction of the power increase and fuel consumption as well as gas emissions from ships. Nowadays this second issue becomes very important because of the problem of global warming. Following the increasing awareness of the environmental and human health concerns of shipping, legislative actions have been taken on global and national levels making mandatory (from January 1st 2013) that new ships over 400 gross tonnage, to comply with the regulations, should have emissions of CO2 under limiting value. Technological enhancement to ships like improved hull designs as well as improvement in power and propulsion systems could potentially reduce CO2 emission up to 35 %. These measures could effectively be combined with several other operational measures, such as weather routing and voyage planning, in order to ensure that fuel consumption and CO2 emissions from ships are minimized on every voyage. The proposed research has been conducted in three main areas:

  1. Improvement of the methodology of ship speed, fuel consumption and greenhouse gases (GHG) emission (especially CO2) calculation on actual weather conditions
  2. Optimization of the ship hull (bow and stern) and ship propulsion system operating in actual weather condition
  3. Optimization of ship route by taking into account all relevant parameters: weather prediction, attainable ship speed on waves, main engine performance and navigation constrains.

The main objective was to improve ship design and performance taking into accounts the environmental issue, creating a so-called eco-efficient or “green” ship design. The project team consisted of the scientists who are experts in the naval architecture, mechanical engineering and marine engineering field, which allow solving this problem in a multidisciplinary way.

Keywords: seakeeping, ship speed, ship resistance, ship propulsion, fuel consumption, GHG emission, weather routing

Research areas

  • Ship design
  • Ship hydrodynamics
  • Wind and wave modelling
  • Ship resistance and propulsion
  • Operability
  • Route planning and Optimization
  • Software development
  • Dynamics of a ship engine
  • Uncertainty and reliability
  • Measurements

Research activities

  • Ship engine-propeller dynamics in rough seas
  • Wind and wave loads
  • Sensitivity and stability of the new method for wind load estimation
  • Uncertainty and sensitivity analysis of speed loss model
  • Development of voluntary speed loss model
  • Analysis of the effect of operability criteria on attainable ship speed estimation

Team members

University of Rijeka, Faculty of Engineering, Rijeka, Croatia
Prof. Jasna Prpić-Oršić
Prof. Roko Dejhalla
Prof. Vladimir Medica
Prof. Tomislav Mrakovčić
Prof. Duško Pavletić
Assist. Prof. Ozren Bukovac
Assist. Prof. Dunja Legović
Natalija Vitali, PhD Student

Norwegian University of Science and Technology (NTNU), Trondheim, Norway
Prof. Odd Magnus Faltinsen

University of Rijeka, Faculty of Maritime Studies, Rijeka, Croatia
Assoc. Prof. Igor Rudan
Assist. Prof. Marko Valčić

University of Split, Faculty of Maritime Studies, Rijeka, Croatia
Assoc. Prof. Nikola Račić

Journal papers (2014-2018)

Vettor, R., Prpić-Oršić, J., Guedes Soares, C. (2018). Impact of wind loads on long-term fuel consumption and emissions in trans-oceanic shipping. Brodogradnja : Časopis brodogradnje i brodograđevne industrije, 69 (4), pp. 15-28. doi:10.21278/brod69402
Mrzljak, V., Prpić-Oršić, J., Senčić, T. (2018). Change in Steam Generators Main and Auxiliary Energy Flow Streams During the Load Increase of LNG Carrier Steam Propulsion System. Pomorstvo – Journal of maritime studies, 32 (1), pp. 121-131.
Mrzljak, V., Prpić-Oršić, J., Poljak, I. (2018). Energy Power Losses and Efficiency of Low Power Steam Turbine for the Main Feed Water Pump Drive in the Marine Steam Propulsion System. Pomorski zbornik, 54 (1), pp. 37-51. doi:10.18048/2018.54.03
Sasa, K., Minami Machi, F., Faltinsen, O.M., Lu, L.-F., Sasaki, W., Prpić-Oršić, J., Kashiwagi, M., Ikebuchi, T. (2017). Development and validation of speed loss for a blunt-shaped ship in two rough sea voyages in the Southern Hemisphere. Ocean engineering, 142, pp. 577-596. doi:10.1016/j.oceaneng.2017.07.029
Valčić, M., Prpić-Oršić, J., Vučinić, D. (2017). Application of a pattern recognition method to estimate wind loads on ships and marine objects. Materialwissenschaft und Werkstofftechnik, 48 (5), pp. 387-399. doi:10.1002/mawe.201700009
Prpić-Oršić, J., Vettor, R., Faltinsen, O.M., Guedes Soares, C. (2016). The influence of route choice and operating conditions on fuel consumption and CO2 emission of ships. Journal of marine science and technology, 21, pp. 1-24. doi:10.1007/s00773-015-0367-5
Valčić, M., Prpić-Oršić, J. (2016). Hybrid method for estimating wind loads on ships based on elliptic Fourier analysis and radial basis neural networks. Ocean engineering, 122, pp. 227-240. doi:10.1016/j.oceaneng.2016.06.031
Prpić-Oršić, J., Faltinsen, O.M., Parunov, J. (2016). Influence of operability criteria limiting values on ship speed. Brodogradnja – Časopis brodogradnje i brodograđevne industrije, 67 (3), pp. 37-58. doi:10.21278/brod67303
Mrzljak, V., Mrakovčić, T. (2016). Comparison of COGES and diesel-electric ship propulsion systems. Pomorski zbornik, 1, pp. 131-148. doi:10.18048/2016-00.131
Bukovac, O., Medica, V., Mrzljak, V. (2015). Steady state performances analysis of modern marine two-stroke low speed diesel engine using MLP neural network model. Brodogradnja – Časopis brodogradnje i brodograđevne industrije, 66 (4), pp. 57-70.
Mrzljak, V., Medica, V., Mrakovčić, T. (2015). Simulation of diesel engine cylinder process using quasi-dimensional numerical model. Pomorstvo – Journal of maritime studies, 29 (2), pp. 165-169.
Valčić, M., Dejhalla, R. (2015). Neural Network Prediction of Open Water Characteristics of Ducted Propeller. Pomorski zbornik, 49-50, pp. 101-115.
Prpić-Oršić, J., Parunov, J., Šikić, I. (2014). Operation of ULCS – real life. International Journal of Naval Architecture and Ocean Engineering, 6 (4), pp. 1014-1023. doi:10.2478/IJNAOE-2013-0228

Conference papers (2014-2018)

Prpić-Oršić, J., Sasa, K., Valčić; M., Faltinsen, O.M. (2018). Uncertainties of Ship Speed Loss Evaluation under Real Weather Conditions. In: Proceedings of the ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering – OMAE 2018, Madrid, Spain.
Braidotti, L., Prpić-Oršić, J., Valčić, M., Trincas, G., Bucci, V. (2018). Fuzzy Analytical Hierarchical Process to Assess Weights of Importance in Ship Operation Risk Assessment. In: Proceedings of NAV 2018: 19th International Conference on Ship & Maritime Research – Technology and Science for the Ships of the Future, Trieste, Italy, pp. 88-96. doi:10.3233/978-1-61499-870-9-88
Mrzljak, V., Senčić, T., Prpić-Oršić, J. (2018). Energy efficiency and energy power losses of the turbo-generator steam turbine from LNG carrier propulsion system. In: International Scientific Conference – Machines. Technologies. Materials – 2018 – Winter Session – Proceedings, Sofia, Bulgaria, pp. 27-30.
Mrzljak, V., Prpić-Oršić, J., Žarković, B. (2018). Mean pressure of mechanical losses equation for marine slow speed two-stroke diesel engine. International Scientific Conference – High Technologies. Business. Society – 2018 – Proceedings, Sofia, Bulgaria, pp. 60-63.
Mrzljak, V., Prpić-Oršić, J., Poljak, I. (2018). Comparison of fuel costs between COGES and diesel-electric propulsion systems for conventional passenger cruiser propulsion. International Scientific Conference – Technics. Technologies. Education. Safety. 2018 – Proceedings, Sofia, Bulgaria, pp. 129-132.
Mrzljak, V., Žarković, B., Prpić-Oršić, J. (2018). Liquid fuel temperature, pressure and injection rate influence on injector nozzle Reynolds number and contraction coefficient. XXVI International Scientific Conference – Trans & MOTAUTO ’18 – Proceedings, Sofia, Bulgaria, pp. 64-67.
Valčić, M., Prpić-Oršić, J. (2017). Forbidden zone handling in optimal thrust allocation of DP vessels. In: Proceedings of the 17th International Congress of the International Maritime Association of the Mediterranean IMAM 2017 – Maritime Transportation and Harvesting of Sea Resources, Lisbon, Portugal, pp. 1043-1050.
Randić, M., Pavletić, D., Turkalj, G. (2017). The Measurement of Weld Surface Geometry. In: Proceedings of the 17th International Congress of the International Maritime Association of the Mediterranean IMAM 2017 – Maritime Transportation and Harvesting of Sea Resources, Lisbon, Portugal, pp. 655-662.
Pavletić, D., Soković, M., Vidolin, T. (2017). Learning outcomes an laboru market needs, Welding engineering case study. The 9th International Working Conference, Total Quality Management, Advanced and Intelligent Approaches, Proceedings, Belgrade, Serbia, pp. 138-144.
Mrzljak, V., Žarković, B., Prpić-Oršić, J. (2017). Marine Slow Speed Two-Stroke Diesel Engine – Numerical Analysis of Efficiencies and Important Operating Parameters. International Scientific Conference Industry 4.0 Proceedings, Sofia, Bulgaria, pp. 65-68.
Vitali, N., Prpić-Oršić, J., Guedes Soares, C. (2016). Uncertainties related to the estimation of added resistance of a ship in waves. In: Proceedings of the 3rd International Conference on Maritime Technology and Engineering (MARTECH 2016), Lisbon, Portugal, pp. 391-399.
Prpić-Oršić, J., Valčić, M. (2016). Sensitivity analysis of wind load estimation method based on elliptic Fourier descriptors. In: Proceedings of the 3rd International Conference on Maritime Technology and Engineering (MARTECH 2016), Lisbon, Portugal, pp. 151-160.
Valčić, M., Prpić-Oršić, J. (2016). The effect of forbidden zone handling on optimal thrust allocation. In: Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2016), Trogir, Croatia, pp. 163-173.
Randić, M., Pavletić, D., Sedmak, F. (2016). Utvrđivanje utjecajnih parametara na kvalitetu zavarenog spoja primjenom potpunog plana pokusa. In: Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2016), Trogir, Croatia, pp. 427-434.
Pavletić, D., Vidolin, T., Šuper, M., Vučković, Ž. (2016). Ishodi učenja i potrebe tržišta rada – primjer iz područja zavarivanja. In: Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2016), Trogir, Croatia, pp. 601-609.
Prpić-Oršić, J., Mandić, D., Benić, N., Radić, Ž. (2016). Involuntary speed loss of a tanker in sea waves. In: Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2016), Trogir, Croatia, pp. 73-80.
Vitali, N., Prpić-Oršić, J., Guedes Soares, C. (2016). Methods for added resistance estimation in head and oblique waves. In: Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2016), Trogir, Croatia.
Legović, D., Dejhalla, R. (2016). An overview of measures for ship’s energy efficiency improvement. In: Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2016), Trogir, Croatia.
Mrakovčić, T., Bukovac, O., Prpić-Oršić, J. (2016). Numerical simulation of two-stroke low speed turbocharged engine in heavy sea conditions. In: Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2016), Trogir, Croatia.
Valčić, M., Prpić-Oršić, J. (2015). Wind load estimation method based on Elliptic Fourier Descriptors. In: Proceedings of the 16th International Congress of the International Maritime Association of the Mediterranean IMAM 2015 – Towards Green Marine Technology and Transport, Pula, Croatia, pp. 883-890.
Prpić-Oršić, J., Faltinsen, O.M., Parunov, J. (2015). The effect of voluntary speed reduction criteria on attainable ship speed. In: Proceedings of the 16th International Congress of the International Maritime Association of the Mediterranean IMAM 2015, Pula, Croatia, pp. 143-149.
Legović, D., Dejhalla, R. (2015). Numerical Hydrodynamic Optimization of a Tanker Hull Form. In: Proceedings of the 16th International Congress of the International Maritime Association of the Mediterranean IMAM 2015 – Towards Green Marine Technology and Transport, Pula, Croatia.
Vettor, R., Prpić-Oršić, J., Guedes Soares, C. (2015). The effect of wind loads on the attainable ship speed on seaways. In: Proceedings of the 16th International Congress of the International Maritime Association of the Mediterranean IMAM 2015 – Towards Green Marine Technology and Transport, Pula, Croatia, pp. 867-875.
Prpić-Oršić, J., Vettor, R., Faltinsen, O.M., Guedes Soares, C. (2014). Influence of ship routes on fuel consumption and CO2 emission. In: Proceedings of the 2nd International Conference on Maritime Technology and Engineering (MARTECH 2014), Lisbon, Portugal, pp. 857-864.
Bukša, T., Pavletić, D., Forempoher Škuver, M. (2014). Approach to Quality Assurance of Repetitive Projects in Shipbuilding Industry. In: Proceedings of the 2nd International Conference on Maritime Technology and Engineering (MARTECH 2014), Lisbon, Portugal, pp. 255-260.
Prpić-Oršić, J., Faltinsen, O.M., Valčić, M., Vučinić, D. (2014). Energy efficiency approach to ship design and route planning. In: Proceedings of the 8th AIGE National Conference Reggio Emilia: Universita di Modena e Reggio Emilia, Modena, Italy.
Nabergoj, R., Prpić-Oršić, J., Valčić, M. (2014). Sensitivity of Thrust Efficiency Loss in Dynamic Positioning Predictions. In: Proceedings of the 2nd International Symposium on Naval Architecture and Maritime INT-NAM 2014, Istanbul, Turkey, pp. 81-90.
Prpić-Oršić, J., Faltinsen, O.M., Valčić, M. (2014). Development Strategies for Greener Shipping. In: Proceedings of ELMAR-2014, Zadar, Croatia, pp. 83-86.
Prpić-Oršić, J., Faltinsen, O.M., Mrakovčić, T. (2014). A methodology for estimating the ship fuel consumption at sea waves. In: Proceedings of the 21st Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2014), Baška, Island of Krk, Croatia, pp. 237-245.
Valčić, M., Prpić-Oršić, J., Nabergoj, R. (2014). Impact of Thruster Interaction Effects on Optimal Thrust Allocation in Dynamic Positioning Systems. In: Proceedings of the 21st Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2014), Baška, Island of Krk, Croatia, pp. 347-356.
Valčić, M., Dejhalla, R. (2014). Determination of Hydrodynamic Characteristics of Ducted Propeller Using an Artificial Neural Network. In: Proceedings of the 21st Symposium on Theory and Practice of Shipbuilding, In Memoriam prof. Leopold Sorta (SORTA 2014), Baška, Island of Krk, Croatia, pp. 357-368.

Plenary sessions

Valčić, M., Prpić-Oršić, J., Vučinić, D. (2017). Sensitivity of Pattern Recognition Method for Estimating Wind Loads on Ships and Marine Objects. In: 11th International Conference on Advanced Computational Engineering and Experimenting (ACE-X 2017), 4 July 2017, Wien, Austria.
Valčić, M., Prpić-Oršić, J., Vučinić, D. (2016). Application of pattern recognition method for estimating wind loads on ships and marine objects. In: 10th International Conference on Advanced Computational Engineering and Experimenting (ACE-X 2016), 4 July 2016, Split, Croatia.

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