NAVY DEPARTMENT, Washington, September 1, 1920. 1. The Boat Book, United States Navy, 1920, is approved and is issued to the service for information and guidance. The instructions contained herein supersede all others of a similar nature and shall be strictly observed. No changes shall be made without the approval of the Navy Department; but suggestions regarding changes or improvements shall be made, and any errors discovered shall be reported at once to the Navy Department. JOSEPHUS DANIEL, Secretary of the Navy. 3 |