can mathematics,navigation and physics help a sailor? Explain with refrence to the novel Gullivers travel.

"I laid them out in learning navigation, and other parts of the mathematics, useful to those who intend to travel, as I always believed it would be, some time or other, my fortune to do."

"I studied physic two years and seven months, knowing it would be useful in long voyages."

All of these skills are important to a sailor. The ability to read maps, figure longitude and latitude, read a compass, a sextant, measure distance, make knots, and measure speed are a necessity during a sea voyage.