IPA: /ɪnˈʃɔːr/
KK: /ɪnˈʃɔr/
Located or happening close to the land along a coast.
The inshore waters are usually warmer than the open sea.
Close to or moving toward the land from the sea.
The boat sailed inshore to avoid the stormy waters.
Inshore is formed from "in-" (meaning within or into) and "shore" (from Old English "sceor", meaning the land along the edge of a sea or lake). The word "inshore" refers to the area that is within or close to the shore.
Think of being 'within' ('in-') the area of the 'shore' — that's why inshore means close to the land.