This administrative message from CINCLANTFLT provides guidance to Navy commands on properly classifying and disclosing information related to ship and submarine movements. It outlines which types of information should be classified Confidential or higher, such as details of ongoing operations. It also provides examples of sensitive unclassified information, such as unit arrival/departure dates within 48 hours, that require risk assessment before public release. All personnel are reminded to handle classified information according to regulations and exercise sound judgment when disclosing other operationally sensitive details.