law: Indian Ports Act, 1908
  20. Willfully loosening vessel from moorings 
  If any person willfully and without lawful excuse loosens or
  
  removes from her moorings any vessel within any such port without leave or
  
  authority from the owner or master of the vessel, he shall, for every such
  
  offence, be punishable with fine which may extend to two hundred rupees, or
  
  with imprisonment for a term which may extend to six months.