Assessment of Speed and Power Requirements for a Patrol Boat Repowered with Twin 300 hp Engines Using Computational Power Prediction

DOI

10.2991/978-94-6463-926-1_21How to use a DOI?

Keywords

Computational Power Prediction; Hydrodynamic Simulation; Patrol Boat Repowering; POS AL Bengkalis; Speed–Power Analysis

Abstract

This study investigates the speed and power requirements of a light coastal patrol boat repowered with twin 300 hp diesel engines using computational power prediction. The vessel—laid up since 2015—was retrofitted to achieve a service speed target of 40 kn, replacing its original 100 hp unit. A high-fidelity hull model (11.50 m LOA, 2.50 m beam, 0.80 m draft) was digitized and analyzed under calm-water conditions to compute total resistance across speeds of 10–25 kn, employing panel-based resistance methods and ITTC-57 friction correlations. Resulting resistance data were converted to required propulsion power (Preq=R_TV) and fitted to a third-order polynomial Preq=0.84V³−6.2V²+23.7V+45.1, R²=0.998. Findings reveal that the 600 hp capacity sustains speeds up to approximately 20 kn (requiring 594 hp), beyond which power demands (622–749 hp at 21–25 kn) exceed available capacity. Propulsive efficiency peaks at 34% around 16 kn, indicating an optimal cruising range of 15–17 kn. Extrapolation to 40 kn would demand on the order of 4,600 hp, underscoring the need for significant hull-form or propulsor modifications. These results provide a quantitative basis for operational planning and future design optimization of small high-speed naval craft.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Budhi Santoso
AU  - Romadhoni Romadhoni
AU  - Muhammad Riski
AU  - M. Sidik Purwoko
AU  - Abdul Haris
AU  - Boby Satria
PY  - 2025
DA  - 2025/12/31
TI  - Assessment of Speed and Power Requirements for a Patrol Boat Repowered with Twin 300 hp Engines Using Computational Power Prediction
BT  - Proceedings of the International Conference on Applied Science and Technology on Engineering Science 2025 (iCAST-ES 2025)
PB  - Atlantis Press
SP  - 174
EP  - 183
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-926-1_21
DO  - 10.2991/978-94-6463-926-1_21
ID  - Santoso2025
ER  -