What sailing instruments were not yet invented during the Renaissance?

During the Renaissance, several key sailing instruments were not yet invented, including the sextant, which later revolutionized navigation by allowing sailors to determine their latitude and longitude more accurately. The chronometer, essential for precise timekeeping at sea to calculate longitude, was also absent during this period. Additionally, the modern compass, while in use, lacked the advanced features and reliability found in later versions. These limitations affected navigation and exploration during the Renaissance era.