As the others have said, some of things can't be done, but here is a way to make life on the ship screen a lot easier.
Sort your ships by name -- you can do this from any of the screens.
Go to the general screen and sort by type -- your ships will be sorted alphabetically by name within each type, also sorted alphabetically.
Go to the fleet screen and sort by fleet -- all your fleeted ships will be at the top sorted as above. All unfleeted ships will appear after the fleeted ships also sorted as above.
Try this, I'll think you'll like it.
