FROM A MANAGEMENT VIEWPOINT. 57 



The next paper on the program is entitled "An Analysis of the Isherwood System of 

 Ship Construction," by Mr. John Flodin, Associate. 



Mr. Flodin : — Mr. President and gentlemen, rather than give you a dry reading of a 

 dry paper, or a synopsis of a dry paper, I should like to give you a little sketch of the rea- 

 sons why I started to do this work. I was very fortunate, when I first started out in ship^- 

 building, to work with a man of long and varied experience, but like a great many men of 

 long and varied experience, he was very much opposed to the Isherwood system — so much so 

 that he was unwilling to consider it at all. I asked him- some questions about it, but he al- 

 ways declined to consider the subject. Finally I started to gather and study magazine ar- 

 ticles and advertising literature and various odds and ends, but advertising literature in gen- 

 eral is not to be relied on, and while some of the magazine articles I ran across were very 

 interesting — for example, an article by Montgomerie in Engineering, for, I think, March, 

 1913 — these articles seemed to take too roseate a view of the subject. Consequently I was 

 glad, indeed, when the shipyard I was then connected with decided to change from the 

 transverse framing construction, to the Isherwood type of construction. This gave mie an 

 opportunity to compare directly the two systems, but unfortunately it is not possible to give 

 the complete calculations in a paper of this kind — it would take several times the length I 

 have used to give these calculations in full, and consequently many considerations are left 

 out. 



One thing I possibly should have mentioned is the fact that in the Isherwood ship all 

 the longitudinals were included in calculating the section modulus, but were reduced the same 

 as the shell plating for riveting — that means, the same deduction was made as for non-water- 

 tight rivet spacing as in the shell plating. I mention this, because I anticipate that it will 

 be brought up in the discussion which will follow. 



