CFR / 
Title 46
 / 
Part 7
 / 
Sec. 7.90 St. Johns River, FL.
A line drawn from the southeasternmost extremity of Little Talbot (Spike) Island to latitude 3023.8 N. longitude 8120.3 W. (St. Johns Lighted Whistle Buoy ``2 STJ''); thence to St. Johns Light.