OCR Text |
Show THE SUBMARINE BOAT, Tho chief difficulties In designing a submarine boat can all bo satisfactorily satisfactor-ily mot except those of propelling power under all conditions, and of field ot vision when submerged. 8ho will bo deficient In speed until an unknown power can bo found, and aha cannot retain her Invisibility below the sur-faco sur-faco and at tho samo tlms seo her enemy en-emy without somo discovery In tho property ot light that Is difficult to Imagine, Although a submarine can "bo'perfcctly lighted by means of storage stor-age cells, and perfectly vcntllattj by pumping tho air ovorboard and renewing re-newing tho supply from tho compressed com-pressed nlr tanks, she will be uninhabitable unin-habitable for long periods owing to the cramped quarters; nnd tho duties of the crow are so severe that tho men must bo relieved frequently. The best submarine that can bo built at present must bo slow, muro uninhabitable unin-habitable than surface craft, and of limited tlmo enduranco while moving in flitting trim; but with relief crews sho at occupy Indefinitely a position rcqulre.it by an enemy for blockade or bombardment, and by showing her camcrs-lurida tuba or conning tower top for a few seconds she can moro up to a httleshlp In tho face ot her lira and searchlight, day or night, and force her to movo away or accept tho probaUlty of being put out of the fight by'a etft rating 3 per cent of her cost and Jfprr cent ot her crew a craft ,Uxstj.lior gun-flreortorpoJo-prao-, tleronld ttop. TUh pruperly manned submarines Initio defensive, blockades cannot bo hell nor bombardments attempted; ml (In attacking forts they will bo infill In countermining the protect-tn protect-tn inlnes and in entering unseen to srfroy ships, dry-docks and buildings. Wlen It was supposed lint tho Hot-lit! Hot-lit! might be used In the attack of thillarana batteries, enough qualified met volunteered from the navy to eiko up doxen crews Harper's. |