SHOUT NOTES ON PROFESSIONAL SUBJECTS. 
177 
113. 10-in. M.L.R. CAR¬ 
RIAGE AND PLATFORM, CASE¬ 
MATE, Mark II. By Captain 
W. Kemmis, B.A. 
The carriage and platform 
lately approved (L. of C. § 2513) 
for the 10-in. M.L.R. gun of 
18 tons, when mounted in a 
casemate, may be described as 
follows:— 
Carriage. 
(Weight 67cwt., tonnage 4*776tons). 
The carriage is of “ double¬ 
plate ” construction, built upon 
Captain Scott’s plan, already 
much adopted in the navy; that 
is to say, the brackets are very 
low, and in order to admit of 
sufficiently high elevation being 
given to the gun (10°), which 
the adoption of low brackets 
would otherwise prevent, the 
bottom of the carriage is in the 
form of a well, into which the 
breech of the gun can sink as 
the muzzle is elevated. 
The advantage of having the 
brackets of a carriage low may 
be said to be threefold—viz., it 
decreases the twisting strain on 
discharge upon the carriage, by 
giving the force in action but a 
small moment about the extreme 
rear bearings of the carriage; 
it permits of the platform upon 
which the carriage rests being 
high; and it increases the sta¬ 
bility of the carriage. 
The frame of each bracket—- 
i.e.t the part which lies between 
the plates, and through which 
the rivets holding the latter pass 
—is of cast-iron, great strength 
not being required in it; in fact, 
the frame in this and all other 
double-plate garrison carriages 
really only serves as a packing- 
piece, to give the plates rigidity 
and to furnish sufficient thick¬ 
ness for bearings in the bracket 
side. 
Two transoms connect the 
brackets. They are “ box¬ 
shaped”—that is, with back, 
front, and ends of plate-iron 
united along the edges by angle- 
iron. To the ends of these 
27 
