A ship graveyard or ship cemetery is a location where the hulls of scrapped ships are left to decay and disintegrate, or left in reserve. Such a practice is now less common due to waste regulations and so some dry docks where ships are broken (to recycle their metal and remove dangerous materials like asbestos) are also known as ship graveyards. As of January 2020, with 30% share India has the highest global revenue and highest share of global ship breaking (number and volume of ships broken).