330 NOTES ON DOCKS AND DOCK CONSTRUCTION. 



at Alt-Ofen, in Hungary, extend along the riverside for a 

 distance of 650 feet, and have a depth inland of about 280 feet. 



The slipways are arranged in groups to accommodate the 

 barges and steamers of the company, the largest of which are 

 250 feet long and 460 tons light displacement. 



Two small monitors belonging to the Government are also 

 hauled up from time to time ; these, on account of their weight 

 being distributed over a short length, are more trying to the 



Fia. 326. 



ways; but no difficulty has arisen either in hauling them up or in 

 relaunching them. 



Fig. 326 shows the general disposition of each group, which 

 can be used for building purposes or for repairing. The vessels 

 are drawn broadside out of the water by chains, the weight 

 being taken up and distributed over the ways by cradles plae-'*! 

 under water at the end of the slipway. On the section (Fig. 

 327), the lower vessel is represented in the act of coming in 

 contact with the submerged cradle prior to the hauling-out 

 commencing; the second is being hauled up the slipway ; and 



