In unfavourable conditions and for larger steamers tugs and lighters are employed.
Two more tugs and then she saw lights coming down the drive.
Alex backed Ed between the tugs of the buggy and hitched him up.
The difficulty of ascending the rapids near Bingen is usually surmounted by the help of steam hauling machinery placed on the bank, though powerful tugs have also come into use for this purpose.
But of late years the beauties of the Rhine have become sadly marred; the banks in places, especially between Coblenz and Bonn, disfigured by quarrying, the air made dense with the smoke of cement factories and steam-tugs, commanding spots falling a prey to the speculative builder and villages growing into towns.