To the Editor of the New-York Times: In your issue of last Sunday I was much surprised to find a communication signed W, advocating the use of the double-propeller or "twin-screw" for our naval ...

TimesMachine is an exclusive benefit for home delivery and digital subscribers. About the Archive This is a digitized version of an article from The Times’s print archive, before the start of ...

The screw propeller, which is the largest in Russian shipbuilding history, of the diameter of 26.9 ft. was manufactured at the defense shipyard Zvezdochka in the city of Severodvinsk, reports ...

THIS is a small book presenting “a simple exposition of the geometrical principles connected with the screw propeller, and illustrating the various ways in which these may be applied to obtain a ...