Abstract: Arrangement for a hose system (11) comprising an inner main hose (12) and an outer cover hose (13) delimiting a ring shaped air filled volume (14) designed to make the hose bouyant in water. At least at one end there is a connector (15) attached to the main hose as well as the cover hose, and which at its free end is attached to, or integrated with, connector part (16) for connection of the hose system (11) to an external system. The connector (15) comprises:—an inner sleeve (22), to which the end of the main hose (12) is attached to, as the inner sleeve (22) by its free end (26) is equipped with an element, in particular threads, for connection to a pipe system—an outer sleeve (16) with to which the end of the cover hose is attached—a connector element (30) for connecting the inner sleeve (22) detachably to the outer sleeve (16), and a connection between the two hose parts (12, 14) comprising a one way valve which allows draining the outer hose (14) to the main hose (12).