Layer Estimates:

Layer: gis_database.sde.UKHO_1983_6nm_Limit (ID:0)
Count: 15
Extent:

XMin: -1544171.92329039
YMin: 6405167.03287084
XMax: 219017.747419096
YMax: 8616910.61377751
Spatial Reference: 102100 (3857)