Starfleet maintains a variety of security codes for use during both peacetime and wartime. These codes are arranged by priority from 1 to 50. The function of these individual codes are summarized below.
Starfleet Security Codes (SSC) 1-29
SSC 1-10 codes are for normal peacetime transmissions of varying priorities, with routine transmissions between civilian and commercial planetary centers receiving a priority dispatch of 1 through 5, and levels 6 through 10 used for Starfleet communications.
SSC 11-20 are used in conditions of hostilities between the
Federation and a foreign power. These priorities are used to transmit orders regarding the disposition of vessels and ground troops, the relocation of civilian personnel, the assigning of Starfleet resources to different commands, operations orders for these commands, and specific operations orders.
SSC 21-29 are for use by the Federation Diplomatic Corps.
Starfleet Security Codes (SSC) 30-50
These codes specify conditions of emergency, with variable priority levels given to specific problems or crisis conditions during peacetime operations.
SSC 30
Transmission of communication at SSC 30 code indicates an emergency condition involving a planetary disaster or other unspecificed emergency. Use of this code level means that the sending station is not able to adequately respond to the emergency and requires immediate help at the scene.
SSC 31
The SSC 31 code level is used for a medical emergency,
SSC 32
The SSC 32 code indicates a planetary crisis of natural origin.
SSC 33
The SSC 33 code level is used for a bio-medical crisis requiring immediate evacuation of personnel.
SSC 34
The SSC 34 communication indicates a bio-medical crisis requiring immediate quarantine.
SSC 35
An SSC 35 code level signals an ecological disaster or similar planetary crisis.
SSC 36-38
SSC 36-38 code levels are used for crises of unknown origin that require the immediate evacuation of a large segment of a planet's populace.
SSC 39
Use of the SSC 39 code level indicates an attack by unknown agents on Federation personnel or civilian installations or residence.
SSC 40
Tranmissions coded at SSC 40 level are directed to a specific Starship or Star Base Chief Science Officer, for disclosure to ship or base command staff only.
SSC 41
SSC 41 is similar to an SSC 40 transmission except that it is only for disclosure to the most senior officer present.
SSC 42
SSC Code 42 transmissions are directed to a Specific Starship or Star Base Chief Medical Officer, for disclosure to ship or base command staff only.
SSC 43
SSC 43 is similar to an SSC 42 transmission, except that it is for disclosure to the most senior officer present.
SSC 44
SSC Code 44 transmissions are directed to specific Starship or Star Base Security Chiefs, for disclosure to shp or base command staff only.
SSC 45
SSC 45 messages are similar to those using SSC 44, except that they may be disclosed only to the most senior officer present.
SSC 46
SSC 46 code level is for direct messages to Starfleet Flag Officers of the rank of Captain or higher.
SSC 47
The SSC 47 Code level is used under circumstances similar to SSC 46, except that no acknowledgement or log entry of the transmission is recorded.
SSC 48
Transmission at the SSC 48 level are solely for the Commander of Starfleet, President of the United Federation of Planets, or the Commander of the Klingon Defense Force.
SSC 49
The SSC 49 code tranmissions are for members of the Federation High Council or their representatives.
SSC 50
Transmissions coded at the SSC 50 level are for the Commander of Starfleet, President of the United Federation of Planets, or the Commander of the Klingon Defense Force. No direct acknowledgement or record of these transmissions can be made without prior authorization.
