The barometer is an instrument for measuring air pressure. Barometers are very important for seafarers. Interpret the type and intensity of the wind coming from the amount of pressure in the air. For example, a decrease in the value on the barometer indicates an increase in air temperature. This is the harbinger of the southwestern wind The captains will take precautions accordingly. Therefore, the captains need to read and interpret the barometer values ​​well. They receive training on this subject.

Shaking of ships at the distance between starboard and pier due to waves is called yaw. In boats, from starboard to pier, from the pier to starboard, this name is given to the wave by swinging from the sideboard. Barometers and rollers are things that people interested in shipping should know. Accelerating rollers or increasing or decreasing the barometer value means a lot to a captain.