[Armistead]

As I recall, gunners don't act as lookouts, they simply will have the ability to shoot at whatever range mod gives to a ship spotted by a lookout. To be sure, you could probably test it by removing all on the deck and have nothing but gunners out there. Course, you would be out there, but simply don't lock on to any ship with your binocs.. It's been so long, but think those holding binocs are those that call out ships and gunners will only shoot within range once spotted....It's not so much the game sees individual lookouts, but just a general range based off visual/env values...but someone should test it..

More interesting test...increase sub AI visuals and gun ranges, remove all crew but gunners. I don't think they will call out if anything, more likely just shoot, which of course would simply give you away if they hit something say at 6nms..