Deck awash problem

[nazaka]

Hello everyone!!

I'm running a 100% realistic campaign. However, I would like to carry out my attacks at night as at the time of the Second World War:
_ deck awash
_ intercept the convoy
_ move into attack position
_ and finally launch my torpedoes

But i have a problem with my deck crew: they are present, but no longer help me to spot enemy ships.
My deck officier have the "nearest contact distance" button disable.

Can we change one parameter to solve this problem?

PS: sorry if my english is not perfect, i'm French