Interference with signals, etc

Every person who in any manner unlawfully interferes with or obstructs the working of any lighthouse, beacon, buoy, signal or other apparatus or thing of whatever kind, which is used or maintained for the safety of navigation, whether on the sea, or on a river or other water, or for the safe working or using of any railway shall, although he does not intend to cause harm or danger of harm to any person, be liable to imprisonment for two years.