115 degrees East longitude and 15 degrees North latitude is located in the South China Sea, specifically in the Spratly Islands region.

Here's a breakdown:

* 115° East Longitude: This line runs north-south through the middle of the South China Sea.

* 15° North Latitude: This line runs east-west, crossing the Spratly Islands, a group of islands, reefs, and sandbars that are the subject of territorial disputes between several countries.

Important Note: This location is within a disputed region and the exact location might fall under different claims by various nations.