Extension of La Cotinière harbour on the island of Oléron
Accurately sizing a harbour breakwater in shallow water
La Cotinière (France) - Client: CéteauCéans - Scale: 1:60
Studies performed in the framework of the design studies for the new fishing harbour in La Cotinière.
The Artelia laboratory's assignment
A 3D model was built in the multidirectional wave tank in order to:
- check the hydraulic stability of the main breakwater and the secondary breakwater
- measure wave disturbance in the new harbour basin
- estimate overtopping volumes, especially those reaching the new reclaimed area.
The model replicates the main breakwater (550 m) and the secondary breakwater (385 m), the new harbour basin and reclamation area, and the approach channel, which affects incident wave transformation and hence the conditions to which the structures are exposed.
Overtopping, stability and wave disturbance tests
...in the multidirectional wave tank
Specific features of the project
The shallow depth of the reef in front of the main breakwater can lead to the development of seiches and significant local concentration of waves.