Composit is one of the biggest manufacturers of the floating rubber hoses which are used for carrying out dredging works at the quarries, rivers and in the sea conditions of exploitation. In June in order to perform author's supervision Composit representatives visited a company in the Moscow region, where our floating rubber hoses are used. The customer-company provides the extraction of sand and sand-and gravel aggregate for building because the infrastructure of the region is actively developing and all these materials are in demand. Composit floating rubber hose with UPF of 100 meters length is used with either of two dredgers of the customer-company. The hoses were installed at the dredger in May of 2018 and are still working without any complaints.