Sand & Gravel Dredge View of Kentucky Lock from upriver Auxiliary Patrol Vessel - 3 Knots Duck River Light TNR 111.1 Right Descending Bank  

“Sand Digger” on TN River, Mile 113

KY Lock at Mile 22.4, TN River  

'3 Knots' on Cumberland River at Smithland

Lighted Daymark on TN river at Duck River, Mile 111.1