RELONG ikuwongolera nthawi zonse ndikukulitsa makina aposachedwa kwambiri.Imapereka machitidwe osiyanasiyana a mano pakugwiritsa ntchito kulikonse mu dredging.Kaya ndi mutu wodula, gudumu lodulira, mutu wokoka kapena mchenga, dongo kapena mwala, tili ndi njira yothetsera kukula kulikonse.Makina onse a mano amapangidwa mwapadera kuti agwetse.