Encl: (1) to COMDTINST 3161.2G
28 MAR 1988
UNCLASSIFIED
OPNAVINST S5513.5A
08. 08. HARDWARE: Not applicable.
09. OTHER: Not applicable.
10. BRIEF JUSTIFICATION
A.
Delineation of bottom topography indicates the position of classified installations.
B.
Sounding information is associated with a classified geographic location or with a specific
ship at a specific time during a classified operation.
C.
Sounding information, by its singular source or by its details, could provide to a potential
enemy useful intelligence information concerning classified operations.
D.
Sounding information, by its detail or by its proximity to classified operating areas, would
be of significant military value to a potential enemy for highly accurate bottom contour
navigation.
E.
An agreement with another country requires classification of the data.
11. SECONDARY DISTRIBUTION: U.S. Government and their contractors.
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