Uma ufaka isisitho selanga emotweni yakho ulindele ukuthi ikwazi ukunqanda imvula, futhi ngokusobala lokho kusho ukuthi kufanele ingangeni manzi.Kusho ukuthini ngempela ukuthi “ukungangeni manzi”?Iqiniso liwukuthi akukho lutho olungangenwa amanzi ngokuphelele - phoqelela amanzi ngokumelene nalo kanzima ngokwanele futhi lizodlula.Yingakho uma ubuka amafilimu akhuluma ngemikhumbi-ngwenya uzoqaphela ukuthi i-dial enkulu inombala obomvu.
Ngokusobala isisitho selanga sakho ngeke sitshuze sifike ku-300 metres, ngakho-ke lokho kusho ukuthi kuqinisekisiwe ukuthi kuzolunga?Hhayi impela.Cishe ngokuqinisekile yenziwe ngekhanvasi enoqweqwe olungangeni manzi kuyo, ngakho-ke inhle kakhulu ekugcineni izinto ezimanzi zingaphandle, kodwa kunomkhawulo wokuthi ingakanani ingcindezi engakwazi ukuma ngaphambi kokuba abanye baqale ukungena.Umfutho wamanzi indwangu engamelana nawo ubizwa ngokuthi i-hydrostatic head, elinganiswa ngamamilimitha, futhi ngokuvamile imakwa kuma-awnings namanye amagiya angangeni amanzi.
Okushiwo ikhanda le-hydrostatic ukujula kwamanzi ongawabeka phezu kokuthile ngaphambi kokuthi kuvuze.Noma yini enekhanda le-hydrostatic elingaphansi kuka-1,000mm ayingeni eshaweni, ayimelani nesimo sezulu, futhi ikhuphuka isuka lapho.Ngokusobala lokho akusho ukuthi ibhantshi elingangeni eshaweni ngeke livuze kuze kube yimitha ngaphansi kwamanzi;imvula ingaba nengcindezi ephezulu kakhulu uma ishaya ngoba ihamba ngokushesha, futhi umoya ophezulu noma amathonsi emvula amakhulu azoyinyusa nakakhulu.Imvula enkulu yasehlobo ingakhiqiza ikhanda le-hydrostatic elicishe libe ngu-1,500mm, ngakho lokho ubuncane obudingayo ukuze uthole isisitho selanga.Kuphinde kube esiphezulu okudingeka ngempela ukubheka ngoba uma isimo sezulu sibi ngokwanele ukukhiqiza ingcindezi ngaphezu ukuthi akuyona isisitho selanga endlini oyifunayo;liyitende elifanele.Amatende esizini yonke ngokuvamile alinganiselwa ku-2,000mm kanti awe-expedition angaba ngu-3,000mm nangaphezulu.Izilinganiso eziphakeme kakhulu ngokuvamile zitholakala kumashidi aphansi, ngoba uma uhamba kwelinye elilele emhlabathini omanzi udala amandla amaningi akhama amanzi abheke phezulu.Bheka u-5,000mm lapha.
Isizathu sokuthi sincome ikhanvasi njengempahla yesisitho selanga ukuthi ngokuvamile inekhanda eliphakeme kakhulu le-hydrostatic kunendwangu yesimanje ephefumulayo.I-Gore-Tex nokuthandwayo kuklanyelwe ukukhipha umhwamuko wamanzi, futhi lokho kusho ukuthi kunezimbotshana ezincane.Njengoba umfutho ukhuphuka amanzi angaphoqwa ngalezi.Izindwangu eziphefumulayo zingaba nezilinganiso eziphakeme kakhulu, kodwa zivame ukwehla ngokushesha ngokuguga kancane.Ikhanvasi izohlala ivaliwe isikhathi eside.
Uma isisitho selanga osibhekayo sinekhanda le-hydrostatic esohlwini, noma yini engaphezu kuka-1,500mm izokwenzela okuhle.Ungalinge uwele ngaphansi kwalokho noma ngabe isisitho selanga sinezinto oyithandayo, ngoba kunoma yini engaphezu kweshawa elincane lizovuza.Akukhathalekile ukuthi inkulu kangakanani ngazo zonke ezinye izindlela uma ingasigcini isimo sezulu.
Isikhathi sokuthumela: Dec-09-2021