Show JA PLUNGER AFLOAT BUDMAHINC TOnlCDO GOAT SUCCCSSFULlY LAUNCHED Wore al of retire 1oerVass l to II 1ropellel t > r alum When An1 and by a rotor t1 h submerged X ion tub I marine torpedo filllr of tile Holland r pv typo designed l far 9 Iho United 81al e navy WAS Success I hilly launched It the yard ot theo I Columbia Iron work at llalllmore the other day Th Plungir lain 1 la-in almost every respect similar In the Holland recently completed nt tale teeth N J but It li I claimed for her that mine of Ibo minor defect In the iniliabotti boat will bo remedied when till new one li I completed The boat It cigar shaped and la I built of steel throughout It la l eighty Mire feet In length snit eleven feet flInches fl-Inches In diameter When floating Unlit It had a displacement of 1U ton and when down to the load line 17 tuna Two seta of motive power are provided one for Ibo afloat and awash condition and the other for the tub merged Twin quadruple expansion engine wait steam furnished from a water tube bolter will operate Irwin screw when aPoit IT awash and I a Seventy horse power motor fed or rcttyclght chloride tell will turnlih the power when the vessel li I submerged sub-merged Tim steam power cleetrlo dynamo And storage toll are 10 connected ni to bo readily reversed In their action thui rendering It possible to recharge the cells from the dynamo the tram ptnglno being used ai a prima motor The electric power may alto be connected con-nected to the propeller holt placed n the alls nf the boat l In addition to Iho connection with the main propeller I tte rl pr had The motor mar thus operate n pedal propeller In addition to driving driv-ing the main shaft Independently ot the team engine Tlio rapacity of the storage cells li I amply large to prevent Injury or do terloratlon while giving off tlio power required to propel tho teasel at i speed of nbout eight knots for ot least nix hours It la I confidently predicted hat the vessel will reach a speed of sixteen knot In tha light Condition a stop valve leads from the service ill reservoir Into the end of inch tub to foellltato tho expulsion ot water from the tube by means of romprested air The primary object In a torpedo Attack At-tack Is I of course to destroy tho enemy Plot the safety of the crew DOlt be considered lIS lar aa la I compatible com-patible In lilts boat ample provision has been made for each Provision for a good l amount of fresh air la I made by a Urge amount of comprsd air carried car-ried l In manganese bronze cylinder In the water ballast space When a descent la I made tho Kingston Kings-ton valves at the bottom In tho water apse are opened and the air In there through the peer allowed to rape valve placed at their upper end The blower la I stopped and the furnace and sail pit door which are provided with fireproof packing are rioted I air tight The imoko Mack I Ie lelewopwl I while the cover of the npttturfl through which It enter seines around and drop over It where It li I tightly clamped Tills requires very few seed I see-d end In Ibo meantime the little itMel 11 la rapidly linking and la I almost awash Tho vessel l ran bo brought to the stir face In several ways If an anchor nt n depth of twenty or thirty feet nil that la I neeeaaary In to weigh anchor If running albtrergtd She can In I aleernl In the outface by the horizontal luddera when the ballast lanka can be cntptlde by an ejector Silo em lee sunk to such n depth that It would be almost nn Imnoaalblllly fir an enemy to hit her with any missile whatsoever while on the other hand lilt can approach the largest war fitly now afloat without being Hn and Mow her Into atoms AII lfV < na Vi T11 fiigZZZ TSSS = crato s A = 2E3 i < m i Till PLUNOTIl UNDKIl WAY = = = = = while She will be able to reach fifteen knot with tilde fret of water covering cover-ing tho hull and not less than eight knots while submerged At they Upted an endurance ot fifteen hours awash and ten hours submerged ls An Itlclpated She will carry no guns ir otter armament except five automobile torpedoes to bo launched from two expulsion tube Two additional tor pelov ran bo carried It desired A complete shell surrounds the vet 101 from Ibo stem aft to about three qnartera of the length ot tho boat Tits forward croft space within the Inner shell contains tile torpedo expulsion lubes I Abaft ot this space Is I the bolUr which la lucised In asbestos with a double thickness and nn In 4rmediato air space txtweej Abaft ot the boiler Is I the engine room containing the engines condenser pumps blower dynamo and connections connec-tions Abaft nt the dynamo the air compressor and the ballast tank aro placed Such la I tho Interior of tho vessel but the apace between lee Inner and outer shells la Important In the disposition dis-position ot materials and In the operation oper-ation ot tbo boat The expulsion tube are In flee bow sail tho lion of the vessel between the stern and tile forward for-ward bulkhead In the space between the two shells romans two horizontal tubular spaces In prolongation of the expulsion tubes Tho remainder of the space In this compartment It I tuellltlll > and la used l aa a tea water tank which l can bo quickly emptied when noetawry Ilea pressure for forcing the water out U I cumproMod air Above the tank are plaenl Ihri magazine tube to hold autoir Ito IT I pedoeo lash tub li lotiiou eIC A water tight iJ i > < v n i < i tait IVom the fort r I Man i tine a 4 pip i n vltft b cheek rijv w UC ar t Pi5h tin 1 b vd un s ah the shell pi tad it Ar i rr > U 1011 U i j 2 top v lee i 61 11 n lad to ipcnlK troy h toG to-G 0 room AftflUwr HU Card with |