Three dozen loaded oil tankers have accumulated off the coast of California. And they are not going to unload them. The fact is that due to the sharp reduction in the price of black gold, American traders prefer to store raw materials in tankers. Underground storage facilities in the United States are full and fully cover the needs of the country. In this situation, storage in tankers is much cheaper. Now off the coast of California is the largest amount of oil in history. The current volumes can meet up to 20% of the world’s demand for this raw material. However, the accumulation of tankers creates severe problems for shipping off the coast of the state.