41 



kon ligesaa hurtig senn Loddernes oller hurtigere, vil don 

 komme til Bunds mod on horizontal Component i sin Be- 

 vægelse, hvilket vistnok vildo være del sikreste Middel til 

 at don blev klar under den følgende Bundskrabnins;. 



Saasnart Skraben antoges at have uaaet Bund, kaste- 

 des Touget los forud og Bugten bragtes agterover. lagdes 

 ind i Fodblokken (a. Fig. 2) i Akterkant af Hytten og 

 derpaa om Spiltapperne om Styrbord, saaledes som Fig. 1 

 viser. 



Med 1. 1 ' -j og 2 Knohs Fart og samme Kurs som 

 tidligere blev nu Skraben trukket henover Havbunden, idet 

 Y.egten i Forhaand holdt ilen forsto Del al Touget ned. 

 saa at Draget blev horizontalt eller aæsten horizontalt, og 

 Skrabemunden ikke lot løftedes fra Bunden. Under Skrab- 

 ningen maatte man stadig have Opmærksomheden henvendt 

 paa Accumulatoren. Dens Udvidelse og pludselige Sara- 

 mentrækning igjen angav, naar Skraben tog Tag og atter 

 slåp Bunden, og selvfølgelig angav den ogsaa. naar Skraben 

 satte sig fast. Naar Accumulatoren i dette Tilfælde harde 

 udvidet sig saa meget, at man i den lave Stilling, som 

 Loddeblokken indtog, ikke vikle have mere Kraft paa Tou- 

 get. kommanderedes -Fir"! og Maskinisten ved Indhivnings- 

 maskineu. som for dotte Tilfældes Skyld altid stod klar. 

 reverserede Maskinen og firede ud. paa samme Tid som 

 Skibets Fart standsedes. I Regelen fik man Skraben los 

 ved at hive ind igjen paa Touget. Stod Accumulatoren 

 stadig paa samme Mærke, antydede dotte som oftest, at 

 Farten var for stor. og at baade Vægt og Skrabe slæhtes 

 gjennom Våndet tri at Bunden. For at have et Varsko. 

 naar Accumulatoren pludselig udvidede sig over den tilbør- 

 lige Grændse, fastgjordes undertiden en Line med den ene 

 Ende i Accumulatoren og med den anden i Damppiben. 

 der saaledes peb. strax Accumulatoren blev for lang. 



Skrabningen fortsattes ofte indtil et Par Timer, førend 

 man begyndte Indhivningen. Onder denne var Farten 

 standset. og man lod Skibet drive tilbage. I Regelen fore- 

 gik Indhivningen hurtigere end Skibet drev. saa at Touget 

 viste klart ud i Læ. I modsat Fald gik man rundt med 

 Fartøjet, lagde sig paa Læ Side af Touget og drev da 

 tilsidst over Skraben. 



Med fuld Fart paa Indhivningsmaskinen tog den ind 



100 Favne i li å 7 Minutter. Var Skraben meget tung. 

 maatte der hives langsommere. Ettersom Touget kom ind. 

 haledes det fra Spillet over Hytten forefter og blev atter 

 opskudt klart i Bingen forud. Dette var et meget anstren- 

 gende Arbejde. navnlig naar Indhivningen. som enkelte 

 Gange Tilfældet, gik uden Stands i 4 til 5 Timer. 



Den norske Kordhavsexpedition. C. Wille: Apparaterne og deres Brag. 



fhan the weight, it «ill fall vertically. with the heavy ond 

 foremost. If. on the other hand. its rate of descent be 

 equal to or exceed that of the weights, it will. on reaching 

 the bottom, have a horizontal component in its motion. 

 — which is pretty sure to keep it from clogging during the 

 ensuing operation. 



So soon as the dredge, by our calculation, had reach- 

 od the bottom, the rope was east off forward, the bight 

 brought aft. rove through the leading-block (a. Fig. 2) on 

 the after part of the roundhouse. and thon passed round 

 the starhoard drums, as shown in Fig. 1. 



Steaming ahead at the rate of 1. I 1 /.,, or 2 knots. on 

 the same course as before. the dredge was pulled along the 

 bottom, the tension of the motion of the vessel not how- 

 ever acting immediately upon it. but dragging forward the 

 iron sinkers, which by their great weight serve to keep the 

 direct traction horizontal. or nearly so. and thus prevent 

 the mouth of the dredge from being readily lifted up. In 

 dredging we had to keep our attention constantly fixed on 

 the accumulator. Its extension and sudden contraction 

 was a sure sign that the dredge was working properly, and 

 of course the accumulator also told us when the dredge 

 had fouled the bottom. A great and increåsing strain upon 

 the rope. pulling down the block and seriously stretching 

 the accumulator. showed the dredge to have stuck fast. in 

 which case we gave the word to veer. and an assistant 

 engineer, who always stood ready for that' purpose, reversed 

 the donkey-engine and paid out the rope. the ships 

 way, too. being immediately deadened. By bauling in 

 the rope we generally succeeded in extricating the dredge. 

 Sometimes, the accumulator would remain stretched at 

 the same point. and this we as a rule found to indicate 

 that the speed of the vessel was too great. both weight 

 and dredge being dragged through the water clear of 

 the bottom. To give notice of any sudden stretching ol 

 the accumulator beyond the safe limit of extension. we 

 hit on the expedient of fastoning one end of a line 

 to the apparatus and the other to the steam-whistle. which 

 in that case would sound on the elastic bands running out 

 too far. 



Dredging from the "Vormgen" was frequently carried 

 on for a couple of hours before heaving in. During the 

 latter operation the vessel drifted before the wind. The rope 

 being in the majority of cases brought in at a rate exceed- 

 ing the drift of the ship. pointed leeward. If not. we 

 steamed the vessel round. to get the rope to windward 

 and drift over the dredge. 



Working at full speed, the donkey-engine brought in 

 100 fathoms of dredge-rope in b' or 7 minutes. When the 

 dredge had got a very heavy freight to bring up. we heaved 

 at a slower rate. As the rope came in. we hauled it from 

 the drum of the engine over the roof of the roundhouse. 

 and thence forward into the locker, where it was again 

 coiled ready for the uext operation. This was very fati- 

 guing work indeed. particularly when the engine. as was 



