33 C.F.R. § 401.53 Obstructing navigation.
Title 33 - Navigation and Navigable Waters
No vessel shall be operated, drop anchor or be fastened or moored in a manner that obstructs or hinders navigation.
Title 33: Navigation and Navigable Waters
PART 401—SEAWAY REGULATIONS AND RULES
Subpart A—Regulations
Seaway Navigation
§ 401.53 Obstructing navigation.