I don't know if this was intended or not but when I load amphibians into a barge I cant drop them anywhere but on land. I feel this is confusing as I tried to use the barge to speed up my amphibians movement in the water only to discover that you can not drop them in the water. I feel that the option to load amphibians into a barge should be removed or the option to drop them into the water would go a long way to remove confusion.