A tension setting system for a remote setting of a tension in a transfer cable ensuring a displacement of a transfer carriage displaceable along a transfer jib of a crane, said tension setting system comprising: - a transfer winch equipped with a transfer motor and cooperating with the transfer cable so as to ensure a displacement of the transfer carriage in a forward direction and in a backward direction; - a pilot unit connected to the transfer motor to remotely pilot a displacement of the transfer carriage in the forward direction and in the backward direction; and - a setting mechanical device mounted on the transfer carriage and adapted to be actuated by the action of a displacement of the transfer carriage, said setting mechanical device being coupled to the transfer cable and configurable between: ∘ a working configuration in which the setting mechanical device stands still irrespective of the displacement of the transfer carriage and results in a holding of the tension in the transfer cable; and characterized in that said tension setting system comprising ∘ a detent configuration in which, by the action of a displacement of the transfer carriage piloted by the pilot unit according to a predefined first sequence of reciprocating displacement between the forward direction and the backward direction, the setting mechanical device results in a release of the tension in the transfer cable. - a transfer winch equipped with a transfer motor and cooperating with the transfer cable so as to ensure a displacement of the transfer carriage in a forward direction and in a backward direction; - a pilot unit connected to the transfer motor to remotely pilot a displacement of the transfer carriage in the forward direction and in the backward direction; and - a setting mechanical device mounted on the transfer carriage and adapted to be actuated by the action of a displacement of the transfer carriage, said setting mechanical device being coupled to the transfer cable and configurable between: ∘ a working configuration in which the setting mechanical device stands still irrespective of the displacement of the transfer carriage and results in a holding of the tension in the transfer cable; and characterized in that said tension setting system comprising ∘ a detent configuration in which, by the action of a displacement of the transfer carriage piloted by the pilot unit according to a predefined first sequence of reciprocating displacement between the forward direction and the backward direction, the setting mechanical device results in a release of the tension in the transfer cable. ∘ a working configuration in which the setting mechanical device stands still irrespective of the displacement of the transfer carriage and results in a holding of the tension in the transfer cable; and characterized in that said tension setting system comprising ∘ a detent configuration in which, by the action of a displacement of the transfer carriage piloted by the pilot unit according to a predefined first sequence of reciprocating displacement between the forward direction and the backward direction, the setting mechanical device results in a release of the tension in the transfer cable.