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Excellent article!

Rick Sarvas


Wonderful article, as usual. Wish you guys would post more often.

John Fisher


Another great article. I put it on my feed.

Björn van der Meer


I demand a way to financially express my very, very high esteem of your articles.


Kris De Decker



Björn: you must be kidding...

But, in case you are not, there just appeared a PayPal-button at the bottom of the side column...

Björn van der Meer


No I am not kidding! Considering I (and others!) pay good money for magazines at newsstands that usually feature less interesting and less well written articles I want to reward quality.

I have come to loathe magazines and websites that feel the need to have an endless stream of articles to fill the pages, and none feature any in-depth information or orginial reporting.

So please do keep going, and maybe you can even find syndication in print, I hope you do.

(The donation link is in Spanish, by the way)

Kris De Decker


Thank you, Björn. Let's see if this is the start of a trend :-)

It's bizarre that you see the donation link in Spanish. I see it in English, even though I am in Spain. I will try to fix it.

Robert J. Fairchild


River current turbines were redeveloped over 40 years ago. See:
They are like wind turbines in the water. Used mostly for pumping water.

Kris De Decker


Robert: interesting link, thanks.

Paul Nash


Here is a company that is building a modern version of a ship mill for the purpose of - picking up garbage. This ship mill in Baltimore, Maryland, USA, uses a water wheel to run a conveyor screen that picks debris out of the river it sits in - a self power cleaner!


This is in a city that used to have many waterwheels in times past - good to see they have found a new use for them - may it catch on and clean up a few more rivers.



"Elbe in Aachen, Germany, 1899"

Achen is about 500 km from the Elbs, such a distance is regarded as very far in Germany...

I gues you ment Aken (a town besides the elbe)



Very interesting article.

When I looked at the picture of the "Last ship mill on the Rhine, 1925", I thought that something was odd in the appearance of the wheel. Closer examination and enhancement reveals that you can see the side of the ship through the wheel, suggesting netting. Is it possible that this was actually a fish trap rather than a mill? Similar land-based wheels have been used by Alaskan natives for centuries.

Frank Fox


There is a working ship mill in Mureck, Austria.
If you don't read German, you might want to click on Home - Bilder - Mühle and take a look at the photos of the mill.



Why would a floating tidemill have to work with the water moving against it in either direction. Just moor the bow to a single point and let the flow turn the bow into the current.

Károly Teleki


Kris, excellent article as usual!

In Hungary, boat mills were very common on Tisza and Danube rivers in the 19th century. In 1863 4,301 boat mills, 9,173 stream mills, 475 windmills and 147 steam mills were operating in Hungary (not including Transylvania, Slavonia, Croatia).

Several boat mills were working on the Danube at Ráckeve (a town 50 kms South from Budapest) as well, where the last ship mill of Hungary sank during the hard winter of 1968, when the ice broke the houseboat with the milling equipment. In 2006 the Municipality of Ráckeve initiated the idea of rebuilding the boat mill, and enthusiastic local residents, workers, entrepreneurs prepared a full-functional replica of the float mill based on written records, photos and drawings.


Hiberno Frog


The Bazacle dam in Toulouse is still in operation as a hydro-electric station. There are free tours every week.

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