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Title
Determination of aerodynamic and hydrodynamic drag of selected pneumatic life rafts

ISSN printed: 1733-8670, ISSN on-line: 2392-0378
Jachowski, Jacek1; Książkiewicz, Edyta2
URI: https://repository.pm.szczecin.pl/handle/123456789/2895
2025-12-30
The success of a search and rescue operation at sea depends on accurately determining the location and search area of a drifting pneumatic life raft, with particular emphasis on drift. This article examines the leeway of pneumatic life rafts and provides a summary of the available types used as life-saving appliances on ships. Based on experimental and numerical studies, the technical characteristics of the life rafts were compared, and the relationship between their shape and leeway components was analyzed. The research demonstrated the degree of dependence between the life raft’s shape and its aerodynamic and hydrodynamic drag. The results obtained are significant and will inform further numerical studies on leeway and search area estimation. The authors’ previous experimental and numerical work, as well as findings from earlier publications, form the basis for the calculations presented in this paper.
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  2. Breivik, Ø., Allen, A.A., Maisondieu, Ch. & Roth, J.Ch. (2011) Wind-induced drift of objects at sea: The leeway field method. Applied Ocean Research 33 (2), pp. 100–109, doi: 10.1016/j.apor.2011.01.005.,
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  5. Jachowski, J. & Książkiewicz, E. (2024) Numerical Prediction of Pneumatic Life Raft Performance. The International Journal on Marine Navigation and Safety of Sea Transportation 18 (1), pp. 229–232, doi: 10.12716/1001.18.01.24.,
  6. Jachowski, J., Książkiewicz, E. & Szwoch, I. (2021) Determination of the aerodynamic drag of pneumatic life rafts as a factor for increasing the reliability of rescue operations. Polish Maritime Research 28 (3), pp. 128–136, doi: 10.2478/ pomr-2021-0040.,
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Title

Determination of aerodynamic and hydrodynamic drag of selected pneumatic life rafts

Pages

Figures

11

Tables

4

ISSN printed

1733-8670

ISSN on-line

2392-0378

DOI

10.17402/671

Type

Original scientific article

Journal

84 Scientific Journals of the Maritime University of Szczecin, no. 84 / 2025

Publisher

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Politechniki Morskiej w Szczecinie

Copyright Holder

Scientific Journals Maritime University of Szczecin, Zeszyty Naukowe Politechniki Morskiej w Szczecinie

Published

2025-12-30

Recieved

2025-11-06

Accepted

2025-12-10

Funding

No data

Keywords

pneumatic life rafts, leeway, aerodynamic drag, hydrodynamic drag, search and rescue operations, life rafts geometry

URI:

https://repository.pm.szczecin.pl/handle/123456789/2895

Language

English

Authors

Jachowski, Jacek1; Książkiewicz, Edyta2

Affiliation

1 Gdynia Maritime University, Faculty of Navigation, Department of Ship Operation 81-87 Morska St., 81-225 Gdynia, Poland, j.jachowski@wn.umg.edu.pl
2 Gdynia Maritime University, Faculty of Navigation, Department of Ship Operation 81-87 Morska St., 81-225 Gdynia, Poland, e.ksiazkiewicz@wn.umg.edu.pl

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