The main function of a marine chronometer is to determine the time and coordinates of a ship during sailing. However, to make such a device, it is necessary to take into account many factors that affect the durability and accuracy of sea watches, such as the following:
- High humidity;
- Salt fumes;
- Regular changes in atmospheric pressure;
- Ship motions.
This was first achieved by the English self-taught watchmaker John Harrison in 1730. Since then, marine chronometers are constantly being improved, but the principle of their operation remains unchanged.