Research Article

An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs

Volume: 2 Number: 1 August 19, 2026

An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs

Abstract

An escort tug is designed to apply emergency braking and steering forces to the stern of a ship while underway. An escort tug features a hull shape that generates large hydrodynamic lift and drag forces when operating at high angles of attack. Escorting modes are highly effective at speeds 8 and 10 knots, often generating towline forces well in excess of bollard pull. Escort performance prediction is an important aspect of the design of escort tugs. It is important to know a priori if a design will meet the necessary performance criteria. Performance predictions have relied heavily on model testing and empirical methods in the past. With the recent developments of Computational Fluid Dynamics (CFD) as a commercially viable design tool for naval architects, extensive escort performance predictions can now be carried out more accurately. This paper describes a simple model of a two-dimensional hydrodynamic theory based on a performance prediction method that is cost-effective in the early design stage.

Keywords

References

  1. Reference1: Smoker, B. (2012). Escort tug performance prediction: A CFD method [Master’s dissertation, University of Victoria]. University of Victoria Libraries. https://dspace.library.uvic.ca/handle/1828/4380
  2. Reference 2: Eppler, R., & Somers, D. M. (1980). A computer program for the design and analysis of low-speed airfoils (NASA Technical Memorandum 80210). National Aeronautics and Space Administration.
  3. Reference 3: Takinacı, A.C. (2016a) “30BP Tug Boat Model Tests”, Ata Nutku Ship Model Testing Laboratory Report, Model No: 406, February 2016. (In Turkish)
  4. Reference 4: Takinacı, A.C. “30BP Tug Boat Escort Capability Evaluation”, Report For Turkish Lloyd, May 2017. (In Turkish)
  5. Reference 5: Takinacı, A.C. (2016b) “Schoettel internal communication for hydrodynamic performances of thrusters – data may be commercially confident”, March 2016
  6. Reference 6: Holtrop, J. (1984). A statistical re-analysis of resistance and propulsion data. International Shipbuilding Progress, 31(363), 272–276.
  7. Reference 7: Blevins, R. D. (2003). Applied fluid dynamics handbook. Krieger Publishing.

Details

Primary Language

English

Subjects

Naval Architecture

Journal Section

Research Article

Publication Date

August 19, 2026

Submission Date

May 31, 2026

Acceptance Date

July 15, 2026

Published in Issue

Year 2026 Volume: 2 Number: 1

APA
Takinacı, A. C. (2026). An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs. International Maritime Studies and Research Journal, 2(1), 1-14. https://izlik.org/JA52WJ98PW
AMA
1.Takinacı AC. An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs. IMSAR. 2026;2(1):1-14. https://izlik.org/JA52WJ98PW
Chicago
Takinacı, Ali Can. 2026. “An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs”. International Maritime Studies and Research Journal 2 (1): 1-14. https://izlik.org/JA52WJ98PW.
EndNote
Takinacı AC (August 1, 2026) An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs. International Maritime Studies and Research Journal 2 1 1–14.
IEEE
[1]A. C. Takinacı, “An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs”, IMSAR, vol. 2, no. 1, pp. 1–14, Aug. 2026, [Online]. Available: https://izlik.org/JA52WJ98PW
ISNAD
Takinacı, Ali Can. “An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs”. International Maritime Studies and Research Journal 2/1 (August 1, 2026): 1-14. https://izlik.org/JA52WJ98PW.
JAMA
1.Takinacı AC. An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs. IMSAR. 2026;2:1–14.
MLA
Takinacı, Ali Can. “An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs”. International Maritime Studies and Research Journal, vol. 2, no. 1, Aug. 2026, pp. 1-14, https://izlik.org/JA52WJ98PW.
Vancouver
1.Ali Can Takinacı. An Efficient Two-Dimensional Hydrodynamic Model for Predicting Escort Performance of ASD Tugs. IMSAR [Internet]. 2026 Aug. 1;2(1):1-14. Available from: https://izlik.org/JA52WJ98PW