we won't have that most likely. 100 ships is stated to be around the maximum, and that number may actually drop. As the game progresses, and as technology progresses, I'm sure that number will rise. But on launch, we may be lucky to have as many as 50 ships in one area.
I was actually convinced to buy it by a 20 year old friend of mine. Dear god, I've never been so addicted to a mobile game before! Never let anyone tell you you're too old for pokemon.