47 U.S. Code § 25 - Fishing vessels; duty to keep nets from cables
The master of any fishing vessel who shall not keep his implements or nets at a distance of at least one nautical mile from a vessel engaged in laying or repairing a cable; or the master of any fishing vessel who shall not keep his implements or nets at a distance of at least a quarter of a nautical mile from a buoy or buoys intended to mark the position of a cable when being laid or when out of order or broken, shall be guilty of a misdemeanor, and on conviction thereof, shall be liable to imprisonment for a term not exceeding ten days, or to a fine not exceeding $250, or to both such fine and imprisonment, at the discretion of the court. Fishing vessels, on perceiving or being able to perceive the said signals displayed on a telegraph ship, shall be allowed such time as may be necessary to obey the notice thus given, not exceeding twenty-four hours, during which period no obstacle shall be placed in the way of their operations.
Source(Feb. 29, 1888, ch. 17, § 5,25 Stat. 42.)