System for assisting in the recovery of at least one submerged object

A mechanical system for blocking and unblocking a wire element deployment system for assisting in retrieving at least one submerged object from the bottom of a body of water;

• the wire element deployment system comprising a wire element and a holding device configured, when locked, to allow the wire element to be held in a short position, in which the distance between two ends of the wire element is less than the length of the wire element, and the holding device being configured, when unlocked, to allow the wire element to be deployed,
• the first end of the wire element being secured to the holding device and the other end being able to be fastened to at least one object intended to be submerged;
• the mechanical blocking and unblocking system being configured to be connected to a control system configured to control the unblocking of the holding device upon receiving an acoustic signal transmitted by an acoustic signal transmission system submerged at the surface,
• wherein the mechanical blocking and unblocking system comprises a blocking device comprising a rod, referred to as a finger, mounted so as to be able to move between:
• a position referred to as armed position, in which the finger is able to interact with a part of the holding device in order to prevent the deployment of the wire element, and
• a position referred to as disarmed position in which the finger is in a position moved away from said part of the holding device in order to allow the wire element to be released;
• the finger being returned to the disarmed position by a spring;
• the mechanical blocking and unblocking system also comprising:
• a holding member for holding the finger in the armed position, which can move between a position for holding the finger in the armed position, and a position for releasing the finger;
• a mechanism for moving the holding member into the position for releasing the finger;
• wherein the mechanism for moving the holding member comprises an electromagnet;
• the electromagnet being configured, when supplied with electrical power by a battery of the control system, to bring the holding member into the position for releasing the finger.

A system for assisting in retrieving at least one submerged object, the assistance system comprising:

• a submersible floating element;
• a wire element deployment system with a wire element held in a short position by a holding device, and that can be deployed, of which one end is secured to the holding device and another end is fastened to said at least one submerged object;
• a mechanical blocking and unblocking system for preventing and respectively allowing the deployment of the wire element by virtue of a control system that is actuated by an acoustic signal transmission system;
• the mechanical blocking and unblocking system comprising a rod mounted so as to be able to move between an armed position, which prevents the deployment of the wire element, and a disarmed position, which releases the wire element, and a rod moving system comprising an electromagnet that, when supplied with electrical power, is configured to disarm the rod.