Friday, July 17, 2015

This week

 

We came upon a charming river ferry across the Willamette.

 

It is self-propelled, but it also runs on a tether.

 

There are cables above and a trolley that runs along the high cables.  The ferry doesn’t hang from the trolley, the cable is slack, but it is there if needed.

 

There is a taut cable underneath the water that guides the boat.  It’s like a train on tracks, except the tracks are an underwater cable that guides the boat precisely to the ramps on each side of the river.

 

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