MANILA, Philippines–The Philippines will be submitting a “voluminous” amount of documents containing arguments, maps and charts to the United Nations arbitration tribunal to bolster its case in its South China Sea territorial dispute with China.

Foreign Affairs Secretary Albert del Rosario said the supplemental submission to be sent to the tribunal in the Hague between Friday and March 16 answers all the questions raised by the tribunal on behalf of China.

“There were 26 questions and we answered all of them and we included maps and charts… It’s voluminous,” Del Rosario said.

Del Rosario has left for the United States to meet with the country’s legal counsel in the arbitration case and to make sure that the submission has completely answered the tribunal’s questions.

The document must reach the tribunal by March 16 as stipulated by the arbitration body. China, on the other hand, has until June 16, to respond to the Philippines’ written comments.

According to Del Rosario, oral hearings will then be scheduled between July 8 and July 20.