Fighting U-Boats The continued effectiveness of the war against Ucboats was proved. by the facts given Air, Winston Churchill, the. Prime Ainister, {i his broadcast early yesterday" morning. Te must be admitted hat, since the extension nem avast Tine atter te victory over. France, the. Germans have' claimed mare. ships than previous; but it cannot be denied that they Have.not succeeded ar et in seriously threaten ing Britnin's food supplies, Nothing. they. have *o"rar been able to do, under ae sea or in the Bir, has. iven any indiention that. they." may-thortly prove to be a greater menace than they fre aifenay. Thanks to the convoy system, Its extremely' dangerous for suvmarins to" atta, rit shipping. Indiigual fast liners, which Ihave' been exempted from compulsory. convoy ting in "certain cireumotancer, have, i true, een picked off but no dont has" Deen made the armour of the system itslt, The ime Proved depth charge hay turned out to bea nos erective weapon against the U-boat, while special bomb, lodging tram brie neterenees to tin the cables, hae been evolved which is more deadly than the old one, and apparently sesses many of the tentures of depth Sharge which' can be_dropped. from" the air. Owing to" the incompressiblily of "water, the ftopin' charge. can be effective. against 1 sipe arm even though it may be dropped severa) The. incompressibility of water is ised in scores of ways commerealy, inthe hydraulic ram and. the powers press that anyone eho: douiae 1 should Al' bleyele pump With and then try fo. €or press the water by: ems of the piston. It will be found impossible to depress. the piston, wit the pump were full of air, the piston could be depressed a considerable dian This attribute of water makes an explosion in it-mulch more severe than a similar explosion in the air, since the shock is much greater. The sitbmarine "is, therefore, in danger from the hiement its" approximate position fax been, spotted; observers may not know exactly where the ship is. but only' Sts whereabouts. so. that [depth cimarges can be dropped all round it in the hope that at least one of them will burst wr chough io open the U-boat seams, The quite aware of this danger, ind greater courage sind hisher moral have be displayed if the U-boat Is 10 achieve its ube lect. Only picked men, after the most careful {raining should be used, amd in this respect the heavy Josees already: inflicted on the Nazis are well "nigh irreplaceable, impossible Nazis {otal blockade. But_mueh might reduce the inflex' 0 goods and food into Britain, and cause incon= Yeniences which if would take time to. over= come. The German occupation of the French of the Straits of Dover has had an effect upon the use of London as a centre for British imports, London normally dealt with a large proportion of the total sea-borsie trade of all home ports. And there ave also many other ports on the Esst Coast which) can be affected
Text read from the printed page and cleaned; old type leaves the occasional error.