DESCRIZIONE
A security system usable on board of a boat comprising: detecting means (2) of the falling overboard of a user; at least one alarm device (3) to signal the falling overboard of the user and operatively connected to said detecting means (2). The security system (1) comprises: timer circuit (10) coupled to said detecting means (2) to delay for a predetermined time the activation of said at least one alarm device (3); an activator/deactivator (11) of the alarm device (3) the user can enable immediately the alarm device regardless of the status of the timer circuit (10), in case of a real alarm, in case of detection error caused by the users inexperience.