First Modifier	Category	Code	Remarks
{Disused}		01
Auxiliary	Mission Area	02	Used with SUBMARINE entity type only.
{Disused}		03
{Disused}		04
{Disused}		05
{Disused}		06
{Disused}		07
{Disused}		08
{Disused}		09
{Disused}		10
{Disused}		11
{Disused}		12
Possible Submarine Low 1	Submarine Confidence	13	Used with SUBMARINE entity type only.
Possible Submarine Low 2	Submarine Confidence	14	Used with SUBMARINE entity type only.
Possible Submarine High 3	Submarine Confidence	15	Used with SUBMARINE entity type only.
Possible Submarine High 4	Submarine Confidence	16	Used with SUBMARINE entity type only.
Probable Submarine	Submarine Confidence	17	Used with SUBMARINE entity type only.
Certain Submarine	Submarine Confidence	18	Used with SUBMARINE entity type only.
Anti-torpedo Torpedo	Weapons Capability	19	Used with TORPEDO entity type only.
{Disused}	Crime	20
{Disused}	Crime	21
{Disused}		22