Marianne Frese, Matthias Bleck, Michael Schöner


Downflow baffle breakwaters or floating breakwaters are not as common as "full-depth" breakwaters. As a consequence the scientific work on hydraulic performance and loading is limited and most work dates back to the 1960s and 1970s. Several baffle breakwaters were planned and constructed in Germany in the last decades. Their advantages are reduced costs due to less material required and less impact on sediment transport and water quality. Experiences from different case studies and first results of a desk study on hydraulic performance and hydraulic loading will be described.


scum board; semi permeable; baffle breakwater; hydraulic function; hydraulic loads; skirt breakwater


Bollmann, C (1996): Wave interactions with vertical wave barriers, United States Naval Academy, Annapolis, USNA Trident Scholar report; no.237.

CEM (2006): Coastal Engineering Manual, U.S. Army Corps of Engineers (Online-Ressource)

EAK 2002 (2007): Empfehlungen für die Ausführung von Küstenschutzbauwerken – Korrigierte Ausgabe 2007. (Recommendations for Coastal Protection Works – Ammended Edition 2007) Herausgeber (Editor): Kuratorium für Forschung im Küsteningenieurwesen". Die Küste, Heft 65

Eggert, W.-D. und Kohlhase, S. (1980) Wave Transmission and Diffraction at Permeable Breakwaters. Proceedings International Conference on Water Resources Development, Taipei.

Eggert, W.-D. (1983): Diffraktion und Wellentransmission an Tauchwänden endlicher Länge. Ein Beitrag zur Bestimmung der Wellendämpfung teildurchlässiger Wellenbrecher (Diffraction and Wave Transmission at Baffle Breakwaters of Finite Length. Note on the Estimation of Wave Damping at Semi-Permeable Breakwaters). Mitteilungen des Franzius-Instituts für Wasserbau und Küsteningenieurwesen, Heft 56, Universität Hannover

Frese, M. (2011) Wirksamkeit von Tauchwänden auf die Dämpfung von Wind- und Schiffswellen unter Berücksichtigung ihrer Neigung. (Hydraulic Function of Scum Bords regarding the Damping of Ship and Wind Waves Considering their Inclination). Master Thesis in Civil Engineering, Karlsruhe Institute of Technology.

Goda, Y. (1985) Random seas and design of Maritime Structures. University of Tokyo Press.

Haas, H.-L.; Lenke, C. and Wünsche, B. (1981) Fähranleger Glückstadt - Wellenschutzwand aus großformatigen Betonelementen. (Ferry Berth Glückstadt – A Breakwater made of Large Concrete Elements) Beton 4/81

Kriebel, David L and Bollmann C. A. (1996) Wave Transmission past Vertical Wave Barriers. Proceedings of 25th Int. Conf. on Coastal Engineering, Orlando Florida

Kriebel, D.; Sollitt, C.; Gerken, W. (1998) Wave Forces on a Vertical Wave Barrier. Proceedings of 26th Int. Conf. on Coastal Engineering, Copenhagen Denmark


Miche, R. (1944) Mouvements ondulatoires de la mer en profundeur croissante ou decroissante. Annales des Ponts et Chaussées.

Oumeraci, H,; Kortenhaus, A.; Allsop, N.W.H.; De Groot, M.B.; Crouch, R.S.; Vrijling, J.K. and Voortman, H.G. (2001) Probabilistic Design Tools for Vertical Breakwaters. Balkema.

PIANC (1994): Floating Breakwaters – A Practical Guide for Design and Construction. Report of Working Group no. 13 of the Permanent Technical Committee II

Sainflou, G. (1928) Essai sur les digues maritimes verticales. Annales des Ponts et Chaussées, Vol. 98, No. 4.

Sommerfeld, A. (1896) Mathematische Theorie der Diffraktion. (Mathematical theory of Diffraction) Mathematische Annalen, Bd. 47.

SPM (1984): Shore Protection Manual. Vol. I + II. U.S. Army Coastal Engineering Research Center, US Army Corps of Engineers, Vicksburg.

Ursell, F (1946): The effect of a fixed vertical barrier on surface waves in deep water, Mathematical Proceedings of the Cambridge Philosophical Society, 43: pp. 374-382

Wiegel, R. L. (1960) Transmission of Waves Past a Rigid Vertical Thin Barrier. Journal of the

Waterways and Harbors Division, Vol. 86, No. 1, pp. 1-

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