484 ME. E. J. EEED ON THE EELATION OF FOEM AND DIMENSIONS TO 
and I.H.P 
and nominal H.P. . . 
Weight of engines and coal 
127 3b' {2d +b')sP 
20000 ’ 
l-82b'{‘2d + b')s 3 
20000 
l‘82b'{2d+b')s 3 
10000 ' 
Hence we have, equating the two expressions for the displacement, as before, 
{10S“+ 20-485'(<2+t<r)}w+20-48 . V . d'w ' X 2 +- : - 2 j I ^ - '^ + 9° 0 tons. 
Substituting the numerical values, we have . . 5-645' 2 — 218*355'=900, 
whence 5'= 42 ’45, 
consequently 
Length =105'= 
Breadth =25'= 
I.H.P = 
ft. 
Weight of armour and backing 
Weight of engines and coals . 
Weight of equipment . . . 
424-5 
84-9 „ 
6859-6 H.P. 
5540-3 tons. 
4470-8 „ 
1959 „ 
900 „ 
Displacement =12870-1 tons. 
The area of the immersed surface of this ship .... =105' 2 + 20-485'<Z 
= 39753 sq. ft. 
and area of immersed midship section = 84-9 X 25 
=2122-5 sq. ft. 
Collecting the results for the two ships, and writing them down in round numbers 
.side by side, we have 
Length 
Ship seven times 
her breadth. 
585 ft. 
Ship five times 
her breadth. 
425 ft. 
Breadth 
84 ft. 
85 ft. 
Indicated horse-power . 
. 8890 H.P. 
6860 H.P. 
Nominal horse-power . . 
. 1270 „ 
980 „ 
Weight of hull 
7586 tons. 
5540 tons. 
Weight of armour and backing 
. 6124 „ 
4470 „ 
Weight of engines and coals . 
. 2540 „ 
1960 „ 
Weight of equipment . . 
. 1350 „ 
900 „ 
Displacement 
. 17600 tons. 
12870 tons. 
These results are very different in detail from those obtained in the cases based on the 
actual ships ‘ Bellerophon’ and ‘ Minotaur,’ and on their trials, the shorter ship requiring 
in this case 2000 indicated horse-power less than the longer ship to drive her at the 
