Yes, for example the Amazon has a series of navigable canals.
sea way, canal, river, navigable.
The two effects of geography on Japan are that it has helped in farming of rice and also in topography where they are able to know the navigable rivers.
a strait
This question needs more context. All large bodies of water are navigable if you have the right tools, knowledge, and vessel.
if you can float it,paddle it,row it.power it,pull it,and the water or river or body of water is not completely blocked with debris,it is navigable in my book.
they are both water bodies.also some of the the rivers are non-navigable and navigable
a water way is any navigable body of water
navigable
Isthumus
beacuase its water
The Strait of Dofuchi is in Japan, detween Shodoshima Island and Mae Island and is reputedly the world's narrowest navigable strait