Instrument navigation is a method used by pilots and mariners to navigate using instruments rather than visual references. This technique is essential in situations where visibility is poor, such as during bad weather or at night. Instruments like altimeters, compasses, and GPS help determine the vehicle's position, speed, and direction. In aviation, cockpits are equipped with various instruments that provide critical information for safe flight. Similarly, ships use navigational tools like radar and sonar to chart their course. Both pilots and mariners rely on these instruments to ensure accurate navigation and maintain safety while traveling.