Question for you..

When creating a sea trade route, the starting port can be a coastal or
river province
of level 4 or higher, but the rule book says: "the other end must be a
coastal province ending within a months sail of the port". Does that mean
provinces next to rivers with a port cannot finish a sea trade route?
Example:

Endier wants to create a trade route from its sole province, down the Tour
River, across
the straights, and back up the Spider River and end at Caercas in Roesone.

Makes sense to me, as long as there are two ports, coastal or river
province, that has
a port for ships, the trade route should be able to run.

Maybe they meant to say is that a sea trade route must end in a province
with a port.
In Medoere, Alamier is on the coast, but doesn't have a port, so no sea
trade route.

Any ideas or suggestions?

Eric