there is a close relation between the sea(the ocean) and Mr van Lutjens feelings
how far do you agree?
منتظر نقاش من السادة الزملاء
و اليكم my point of view
on the first two days
mr van was calm and quiet and so was the sea
but
on the next days
Mr Van became restless , worried
his restless is growing and so did the sea
the sea was responsive to his condition\ state
and suddenly the sea became rough
the waves became high
a strong was blowing

I agree with you that the condition of the sea on the fourth day was a reflection of Van's condition
However, the sea was not rough on the third day, was it? Anyway, such questions can be answered in different ways

The question is wonderful and so is the answer

good one
good think