Systems and methods are disclosed that facilitate identifying messages generated on a mobile device while the device is offline as requiring encryption, storing the messages in a message outbox with a flag indicating that encryption is required, and identifying recipients of the flagged messages to generate a recipient list. The method and system comprises determining that a document has been modified on the collaborative site by a listenerupdater mechanism. The pole layer is substantially flat and parallel to the conductive shield layer, providing for a shorter stack height. The projection data angle for back-projection is determined by considering the data redundancy, SN, time width contributing to the image. The other face faces the control circuit board. Marine electric motors in the pontoons drive propellers to propel the vessel.