Exhibit A

JOINT FILING AGREEMENT

The undersigned agree that this Schedule 13D/A dated May 16, 2018 relating to the Common Shares, par value $0.01 per share, of DryShips Inc. shall be filed on behalf of the undersigned.

SPII HOLDINGS INC.
BY:  MARE SERVICES LIMITED
By:	/s/ Dr. Renato Cefai
	Name: Title:	Dr. Renato Cefai Director of Mare Services Limited

SIERRA INVESTMENTS INC.
BY:  MARE SERVICES LIMITED
By:	/s/ Dr. Renato Cefai
	Name: Title:	Dr. Renato Cefai Director of Mare Services Limited

MOUNTAIN INVESTMENTS INC.
BY:  MARE SERVICES LIMITED
By:	/s/ Dr. Renato Cefai
	Name: Title:	Dr. Renato Cefai Director of Mare Services Limited

GEORGE ECONOMOU

/s/ George Economou

(Signature)