Question

why belt of calm near to the equator?​

Answer 1

The strong trade winds move ships quickly toward their destination. Near the equator, the trade winds from the northern and southern hemispheres converge, resulting in a zone where there is often a lack of wind. The economic effect of the doldrums caused them to be of great interest and a topic of scientific study.

Answer 2

➡️The intertropical convergence zone is a belt of low pressure that circles the Earth with calm air, especially over the oceans. Scientists call the ITCZ various names, including the doldrums or the equatorial calms. When sail-powered ships reached these dreaded zones, they faced the potential of stalling for days or weeks without enough wind to proceed.