What have the wiener mobile to do with climate change?
Considering the fact that either you have submarines and you know how they work - and can therefore at least have a reasonable defense against them or you don't have them and your knowledge will diminish because you can't train those scenarios.
Submarines also come in many variants - all the way from the nuclear "big dicks" to the miniature one-person type. It only takes a small one to cause a major impact in a harbor.
You may actually have to pay more for a large screen without all the WiFi and stuff because the production volume for them is a lot smaller.
Live with the fact that you get "extras" for almost no cost.
The use of money is all the advantage there is to having money. -- B. Franklin