On July 30, 1909, the steamer City of Racine, bound from Racine to Chicago, struck the Chicago Avenue waterworks crib, belonging to the city of Chicago and located in Eake Michigan, near the entrance to the harbor. The hour was 4:02 in the morning. There was a heavy fog, through which the vessel had been running for two hours; but the fog enveloped the crib less than a half hour before the collision. The wind was due north, blowing 10 miles per hour. The vessel was going almost south at the rate of 12 to 13 miles per hour, and checked to half that speed 12 minutes before the collision. The light on the crib was burning, but through the dense fog could not be seen more than 200 feet. The evidence is conflicting as to whether any fog signal was sounded from the crib. The crib keepers testified that the bell was ringing constantly for a half hour before the accident, and the crew testified that they were listening for the sound, hut did not hear it. The trial court found that the collision was caused wholly by the'negligence of the appellee, and rendered judgment accordingly.

11 j The city having placed near the mouth of the harbor an obstruction to navigation, the legal obligation rested upon it to provide on the crib and to keep in use suitable fog signals. This record clearly shows that a light alone is not an efficient fog signal for safe navigation. An audible signal was necessary under the law. If this were all, the case would present no difficulty. But the law looks to the conduct of those on the steamer, as well as those on the crib, which raises the more complex question as to the duty of a captain of a ship approaching a harbor through a fog, and particularly the question of moderation of speed.

Regardless of any negligence on the part of appellee, the vessel was bound to proceed with such caution as a safe navigator would observe, in view of those dangers of weather and location which were within his knowledge. The captain of the Racine was as familiar with all the dangers growing out of the time, place, and accompanying circumstances as any man could be. He had passed over the route thousands of times (he testified 3,000 or 4,000 times). He knew the location, not only of the crib in question, hut numerous other cribs iu the vicinity, some of which he had passed a short time before the accident. The crib which caused the collision had been there over 20 years, and the steamer Racine had passed by it all those years. The captain and his mate had passed it also during all those years, *114either in this boat or some other. There was no danger known to navigation, at the point in question, which was not familiarly known to these two men — how far the light would throw its beams, the distance which sound waves would carry, the caprices of both, how each would be affected by atmospheric conditions, rain, snow, wind, or fog and by the direction and velocity of the wind. No authority could have a better knowledge than this captain and mate as to the uncertainty of receiving signals by the medium of the eye or the ear at the time and place in question.

We think the dangers of the situation, as he knew them to exist, required a higher degree of care from the master of the steamer than he exercised. He had run through the fog for about two hours at full speed, about 13 miles per hour and sounding his fog whistle every minute. It was then 3:50 a. m., and he testifies that he reduced speed oné-half, knowing he was within 10 or 12 minutes of the crib. The steamer and the. wind were going in the same direction; the wind 10 miles per hour. The captain was waiting for signals to tell him where the crib was, although he had estimated it exactly; for he struck it at 4:02 a. m., just where he thought he would reach it. He knew that the signal to the eye would be shortened by the fog, and that the signal to the ear would be shortened by the wind, yet, with a full knowledge of these facts, he speeded along at 6y2 miles per hour, when he might have had the vessel under such control as to avoid injury. If the officers of the vessel needed anything to impress them with the uncertainty of crib signal by light or bell in the given condition of fog and wind, they had it in the fact that they had recently passed other cribs, where they usually saw and heard signals, and that they saw and heard none that morning.

[2] Appellee, to sustain this decree, relies with some confidence upon the utterance of this court in the case of The Conestoga, 178 Fed. 42, 101 C. C. A. 170. We do not think that case can be held to control this. The decree, which was reversed in the Conestoga Case, was based upon a rule of navigation requiring the Conestoga to reduce speed to a rate no higher than was necessary to maintain steerageway, and the court held that the facts of that case did not justify so drastic a rule. The question there, as here, was as to moderation of speed — a mixed question of law and fact as to the sufficiency of the moderation. The two cases as to the surrounding facts are not on all fours. • The Conestoga was going 4% miles per hour; the Racine, 6%. It does not appear that the captain had such knowledge of his dangerous proximity to the crib in the Conestoga Case as in the case at bar. No hard and fast rule as to moderation of speed can be enforced in every case, and the citing of cases will serve no good purpose. The rate of speed must be commensurate with those dangers which are known or must be anticipated. Judged by this reasonable standard, we think there was negligence on the part of appellant, which contributed to the injury. Appellant should therefore pay one half the damages and costs, and appellee the other half.

Decree reversed, and cause remanded, with directions to proceed' in accordance with this decision.