Advice: Rental route includes 1 boat (type is specified). If you want to travel with several boats, add the route to your order and choose the quantity corresponding to the number of boats you wish to order. So if you are willing to travel with 3 boats, you need to order 3 routes.
Note: One order can contain only one route, but you can combine its variants, i.e. - travel the same route with various boat types.