Engineering Wonders of the World
Volume I

396 ENGINEERING WONDERS OF THE WORLD. lance) beaten the best record of her sister on trial last week by *2 of a knot, and are we not for the moment “ cock of the walk ” ? In naval warfare the submarine is expected to prove thoroughly efficient for the following purposes:—(1) For coastal defence, (2) to prevent bombardment of har- The hours and to render a blockade Submarine. . , impossible, (3) to prevent the landing of troops, (4) in narrow waters to take the offensive on the enemy’s shore and face craft it is, of course, limited, hence the “ parent ” ship is a necessity for the sus- tained manoeuvres of a submarine flotilla. As regards offensive power, the submarine proper (unlike the larger submersible adopted in the French Navy) is armed only with torpedoes. It is interesting to note that the operation of Offensive a torpedo from a sub- marine is attended with greater accuracy than in the case of an ordinary torpedo boat to torpedo their ironclads whenever they leave or destroyer, as the latter is more subject to port, and (5) to render insecure all routes of navigation in European waters. Sub- marines have usually a cigar-shaped form. In many submarines electricity is the power surface disturbances. How far the submarine is destined to modify or displace other fighting vessels forms an interesting subject for speculation. employed, but in the later types internal- The techniea.l nnt/hnrifioa combustion engines have been propulsion while navigating on and also for recharging the s which supply the propulsive powe: tion below the surface. In the the radius of action, both while' and on the surface, has been creased ; but compared with t. u Engineering Wonders, facing p. 397* “ Mr. Alan H. Burgoyne desires to express his indebtedness for several details given in the article on ‘Armour of a Battleship' to ‘Warships] by Mr. E. L. Attwood. M.Inst.N.A. {Messrs. Longmans. Green, and Co.. iOS. 6d. net}; and regrets that due acknowledgment was not made in the article named." H.M. TORPEDO BOAT “ GADFLY ” BEFORE LAUNCHING.