Ask Gunners to hold their fire

[Blackdog_kt]

This could be done the way it was in silent hunter 3.

Available gunner modes:
Fire at will
Start firing at long range
Start firing at medium range
Start firing at short range
Cease fire

You could totally silence them if you wanted to sneak past, or tell them to fire only at short range when it's clear that you've been spotted and it's time to defend yourself.

Alternatively, when flying heavies up high and you know you'll be spotted anyway, you could tell them to fire at long range in order to deter the fighters from getting close.