Vehicles traveling on the sea should communicate with each other to prevent a collision. The easiest way for this communication is to use sea whistles. Each whistle on the sea has different meanings. Those who are cruising with sail vehicles one long and two short whistles. Two minutes are left between the whistle times. The single long whistle is used by vehicles driving with the machine. A short whistle means that the ship is heading to starboard. The sound of two short whistles means that the route is turned to the pier. Any person who wants to be a captain or is in a sailor class learns the meaning of these voices. In many different places, different whistle sounds have different meanings.