Layer Estimates:

Layer: ThreeMileLine (ID:0)
Count: 9
Extent:

XMin: -10854162.3814664
YMin: 2884494.38386588
XMax: -7776527.58991537
YMax: 5321934.37538033
Spatial Reference: 102100 (3857)

Layer: WrecksAndObstructions (ID:1)
Count: 3167
Extent:

XMin: -8237642.18032339
YMin: 4439150.66608069
XMax: -7269017.39144905
YMax: 5655720.72273912
Spatial Reference: 102100 (3857)

Layer: RecreationalBoaterActivities (ID:2)
Count: 4635
Extent:

XMin: -8262365.60291614
YMin: 4786751.87059615
XMax: -7440244.79802529
YMax: 5639353.82505514
Spatial Reference: 102100 (3857)

Layer: maintainedchannels (ID:3)
Count: 9228
Extent:

XMin: -19744822.796171
YMin: 654621.131515549
XMax: 16222516.8686815
YMax: 11137868.8402684
Spatial Reference: 102100 (3857)