A packing module includes a volumetrically efficient structure for separately retaining sensors and a cable of a sensor array. The packing module includes a tray that supports the sensors and a retaining leaf arrangement that extends outwardly from the tray to retain the cable on the tray. The retaining leaf arrangement includes a plurality of nested leaves that are spaced relative to each other. Packing the module includes placing the sensors separately and in succession on the tray and inserting a portion of the cable in the retaining leaf arrangement in between each placing of a sensor. The placement of a sensor and insertion of a portion of the cable occurs alternately until the entire sensor array is accommodated. Deployment of the sensor array may occur by alternately removing a sensor and a portion of the cable until the sensor array is displaced from the module.