OF SHIP CONSTRUCTION. 



79 



Table of Section Moduli — Decks All Athvvartship Included in Strengt 



H. 



Referring to the comparison of weights and capacities, this saving as calculated by the 

 writer of this paper, namely, 142 tons, would appear to be about right. But I observe that he 

 makes no allowance for rivet heads or liners. 



With regard to these two items the difference in rivet heads on the twO' systems would 

 not amount to anything worth speaking of. But the liners, undoubtedly, are less in the Ish- 

 erwood system than in the transversely framed vessel, and I should say to the extent, in 



