yd ’ s Rules point out the necessity of having the double bottom efficiently con nected to the outside plating and frames of the main body of the vessel . When reversed frames are cut , the frames must be doubled with short angle irons of their own size . Manholes should be provided toenable… … ing of the bottom should be covered with a suitable cement , such Portland , mixed with a proper proportion of sand .
e-rara · Eisenbibliothek Schlatt · No known copyright restrictions. Free to use for anything.
