[Penelope_Grey]

It all comes down to momentum, the slower you are going when you hit the crash dive the worse off it is for you.

The faster you are going when you hit the Alarm the more inertial drive the U-boat has and thus it can power under the water a little better, simple physics, the foward momentum counteracts the U-boat buoyancy and upthrust effect of the water, like dropping an ice cube into a drink, it will not float immediately. When you are sailing in areas that you know have lots of planes, such as off the North East of Scotland round the area of scappa flow, I recommend wherever possible making your U-boat move along at 1/3 power. So that it will respond appropriately.

Unless of course its a IID you have in which case no worries as they sink like a brick when you hit the alarm! The VIIC's are not bad by half either. The thing about aircraft is, the U-boat's hull integrity drops like a stone when they start peppering you with bullets. A far cry to stock where the U-boat was essentially impervious to bullets, as regards to hull integrity.

Fighting Sunderlands is lethal. I don't advise it in the slightest. The worse is, after they pass over they can still pelt machine gun fire at you by way of an aft gunner.