338 



On the Force, Construction, 8cc. 



struction of ships we have noticed, when armed and equipped 

 for our service, and heeled over to an angle of 7°. 



Table IV. 



And, if we suppose the foreign ships to have their original 

 armaments, &c., the Table above will be altered to the fol- 

 lowing : 



Table V. 



Now if the sea were perfectly smooth, in all these cases, 

 no inconvenience would arise, even in the ship which has the 

 lowest battery ; but a top-sail gale will cause a considerable 

 undulation, and in the British 120 we perceive, from the last 

 table, that a wave of three feet high would be above the port- 

 sills in midship, whilst the French 120 would allow of a wave 

 of five feet, and the Swedish 110 a wave of six feet, without 

 such an effect being produced. A similar advantage will be 

 found to obtain, in the French and Swedish two-decked ships 

 of the line, over those of our construction. 



The preceding deductions are made on the supposition, that 



