Futhi kuwumshini wokuphonsa owesibili ovuselelwa kabusha, kungani abanye bengafinyelela ikhwalithi yomshini omusha, futhi eminye imishini yokufa okufuywayo ingeyena umshini omusha ovuselelwa kahle kunokwenza umshini omusha wokudla okutholakele kunokwenza umkhawulo wezesekeli we-oyela, ohlelweni lwe-waterway, uhlelo lwe-hydraulic, Ukubeka uphawu, konke kufanele kusetshenziswe ngokweqile, uma kungenjalo okuthile kuzohamba kahle . Kufanele kushintshwe imfucumfucu, futhi kudale ukungcola komshini, futhi kudale inani elithile, futhi liphinde lithole ukuncishiswa kwezenhlalo amandla .
