What would be a way of translating this french phrase into english 'la mer est agitée'?

and the following phrase 'à un moment donné,...'What would be a way of translating this french phrase into english 'la mer est agitée'?
la mer est agitée


The sea is agitated/rough.





à un moment donné


At a given moment/time.What would be a way of translating this french phrase into english 'la mer est agitée'?
The sea is rough





At some point
The Sea is agitated, (by agitated that means there is friction ie. waves etc. basically the sea is rough)





'à un moment donné-To A given Moment/At some point.





= )
At one point, the sea is rough.