46 C.F.R. § 7.180
Kotzebue Sound, AK
A line drawn from Cape Espenberg Light to latitude 66°52′ N. longitude 163°28′ W.; and thence to Cape Krusenstern Light.
A line drawn from Cape Espenberg Light to latitude 66°52′ N. longitude 163°28′ W.; and thence to Cape Krusenstern Light.