Rules to prevent collisions of vessels
By: Department of Commerce, Office of the Secretary ; Steamboat Inspection Service and Bureau of Navigation
Contributors: United States. Department of Commerce. Bureau of Navigation
Edition: 4th ed.
Series: Department circular -- no. 230; Department circular (United States. Department of Commerce) -- no. 230
Publisher: U.S. G.P.O.
Published: 1929
Place of publication: Washington, D.C.
Language: eng
Number of pages: 16
Subjects: Collisions at sea; Prevention; Rule of the road at sea
Notes: Caption title.

"Supersedes third edition of Department Circular No. 230, October 10,1927."