Habitat loss or degradation Wave action from boats Threat likely to occur Unknown Very low Unknown

The left bank of the Marne upstream of the port of Bonneuil suffers from erosion under the effect of wave action.

Preventing the destruction of sensitive natural habitats when developing onshore or offshore port spaces and by regulating ship-generated waves.

Preventing the destruction of sensitive natural habitats when developing onshore or offshore port spaces and by regulating ship-generated waves.

But it is also attributable to human causes, notably waves created by ship wakes or “wave action”.

In the dinette, silence is absolute, no creak is audible, nothing moves and, above all, water lapping along the hull is absolutely silent.

This phenomenon is observed from Cornwall to Montmagny, where 15% of banks are exposed to erosion and 85% of that erosion is explained by wave action from boats (Dauphin 2000).