Navy NEC · Intelligence
C20A Ship’s Signal Exploitation Equipment Increment Echo (SSEE INC E) Operator
Current service use not established
This code is listed in the directory. Inclusion alone does not confirm current service use.
A Navy Enlisted Classification: a skill designation sailors hold in addition to their rating.
Overview
A Ship’s Signal Exploitation Equipment Increment Echo Operator performs mobile cryptologic collection and operates the SSEE Increment E cryptologic system. The operator uses the AN/SSQ-137 system installed on Navy combatants to provide cryptologic combat support to warfare commanders.
Minimum clearance: TS/SCI
Core Skills
- Mobile cryptologic collection aboard Navy combatants
- Cryptologic combat support to warfare commanders
Notes & Sources
Evidence for this guidance (1 document)
- NAVPERS 18068F Vol II (NEOCS, Jul 2026 edition): NEC C20A
[1] NEC entry "C20A - Ship’s Signal Exploitation Equipment Increment Echo (SSEE INC E) Operator"; cached text line 3058; NAVPERS 18068F Vol II, 2026-07 edition
Supports: Mobile cryptologic collection aboard Navy combatants, Cryptologic combat support to warfare commanders
Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.
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