Ukraine

In the first part about the landing and bridge head he seems to be unaware that it's a bridgehead onto an Island in the center of the river, not all the way across to the left bank.

They crossed a big channel of the river, but have a still sizable channel to cross between the far side of that Island and the mainland on the left bank.

As I understand it the part of the river they still have to cross is about 800 to 900 feet wide. There is a road bridge, but that bridge might not be usable.
I saw something about them still having 50 or so of the riverboats we gave them. Can they be used to transport troops across? How many can each hold? And on a slightly different thought process, do they have helicopters that can transport troops and/or armor/artillery?