Abstract: Apparatus for connecting a tanker to a marine tower comprising apparatus for mooring the tanker to the tower and apparatus for connecting a supply conduit on the tower to a receiver conduit on the tanker. A hose-pipe section is normally stored on the tanker at least in part on a rotary pulley located on the tanker in a manner such that one of the ends of the hose-pipe has connected to it a first connecting element which opens upwardly on the tanker deck. A boom on the tower capable of freely pivoting about the axis of the latter has attached to its free end a second connecting element adapted to cooperate with the first connecting element. A rope passes vertically through the second connecting element whose free end is attachable to the first connecting element to move the first connecting element towards or away from said second connecting element which remains substantially stationary.