U.S. Supreme Court
The Illinois, 103 U.S. 298 (1880)
103 U.S. 298
The rule requiring a steamer to keep out of the way of a sailing vessel is equally imperative upon the latter to keep her course, and where, by her unnecessary deviation therefrom a collision is rendered unavoidable, the steamer is not liable therefor.
The facts are stated in the opinion of the Court.