Sentence:  The working of the dredging machines improves every day, owing to the constant ameliorations in the various parts, and the increased experience of the crews; the conditions of labour have become much better now that the canal is open throughout its whole length, and that dredging is performed at greater depths; all the <WSD>longshoot</WSD> machines are intended to work night and day without intermission; the others, better and better served, will be able thenceforth to make longer days. 
Meaning of the word marked with <WSD> tags:  A type of dredger that ejects sand and sediment through a long stream.