CREATE TABLE table_name_87 (water_depth VARCHAR, location VARCHAR, name VARCHAR)

What was the water depth in the Gulf of Mexico named Discoverer Clear Leader?
SELECT water_depth FROM table_name_87 WHERE location = "gulf of mexico" AND name = "discoverer clear leader"
SELECT "water_depth" FROM "table_name_87" WHERE "discoverer clear leader" = "name" AND "gulf of mexico" = "location"