This is- a petition of the Reichert Towing Line, Incorporated, owner of the steam tug James Roy, for a limitation of liability under sections 4283-4285, U. S. Revised Statutes (Comp. St. 1916, ’§§ 8021-8023). January 5, 1915, the tug took in tow four scows loaded with dirt and ashes, in two tiers of two boats each, from Long Dock, Erie Basin, through Buttermilk Channel, East River, and Hell Gate, bound for Flushing creek. At about 10 a. m., in perfectly clear weather and light wind, when about 80 to 100 feet off Negro Point, the crank, pin of the crank shaft broke, and the flood tide carried tug and tow on Scaly Rocks, causing the loss of the boats Mathilde R. and Bump, and damage to the boats H. B. Ilornbeck and Frank C.
The petitioner ascribes the disaster to inevitable accident, while the answers of Me insurers of the Mathilde R. and of the owners of the other three boats allege that the tug was unseaworthy and insufficient and deny that the petitioner was without privity or knowledge. Sub ■ sequently the owner of the Mathilde R. filed a libel against the Brooklyn Ash Removal Company, charterer of the boat, which brought in the petitioner, the Reichert Company and the Moran Towing & Transportation Company under the fifty-ninth rule, charging the Reichert Company with using an unseaworthy and insufficient tug -and the Moran Company, which was under a. contract for towage of all the Ash Removal Company’s boats for a period of five years from Jam uary 3, 1914, and which employed the tug James Roy, with liability for the negligence of the owners of that boat, as its agents.
[1-3] Liability turns upon the question whether the breaking of[ the crank pin was due to inevitable accident. The tug was built in 1869, rebuilt in 1901, and purchased by the petitioner in 1907. She had a single high pressure cylinder 20x20, and when built was allowed to carry 80 pounds of steam on the original boilers, which was afterwards increased to 124 pounds on the new boilers. At the time of the disaster she was carrying 115 pounds and running at half stroke, which diminished the pressure. The main shaft was 6 inches in diameter and the crank pin, made of hammered steel, was 4% inches in diameter. It was put in to replace another steel crank pin of the same dimensions, which had broken in November, 1911. The break was near the after end of the pin; the metal showing no sign of flaw. The shoe of the rudder was bent to one side, and the tips, % inches thick, of two cast-iron adjoining blades of the propeller, were broken off.
There was testimony that, in view of the increase of steam pressure on the boilers from 80 to 124 pounds, the crank pin should have had a diameter of at least 6% inches, and it was also shown that at the time the new_crank pin was put in'the prevailing practice was to supply tugs with a boiler pressure like that of the James Roy with crank pins not less than 6 inches in diameter. The strength of the pin increases in proportion to the cube of the diameter.
The District Judge found from the expert testimony that for the required margin of safety of five to one, the bending stress, which, is the dangerous one in the case of a crank pin, required a diameter for metal having the tensile strength of this pin, a very little over 4% inches, viz. 4.59 for a steam pressure of 115 pounds, and 4.56 for a pressure of 112 pounds. This is a small difference, but the owner must take the risk of it.
At the time of the disaster the tug, with a tow quite usual for her, in the center of a favorable tide, carrying 115 pounds, but diminished by proceeding at half stroke, broke this crank pin. Unless caused by inevitable accident, it is plain that the crank pin was insufficient, and the tug unseaworthy. The owner says it was caused by the propeller striking a submerged log. This is pure conjecture, there being not the least affirmative evidence of it, and we reject the explanation as improbable. The propeller was of cast iron, and pitted and discarded for insufficiency about a year afterwards. The tips of two adjoining blades % inches thick, breaking by striking a submerged log, would immediately relieve the shaft and crank pin from any pressure at all. It is suggested that the log got fast between the propeller and the rudder post, where there is a clearance of but a
[4-7] The Moran Company cannot lake advantage of the laws limiting the liability of shipowners, because it was neither the owner nor the charterer pro hac vice of the tug James Roy. Although the Reichert Company has been held liable for negligence, it will not be liable beyond the value of the lug, if it was without knowledge or -privity’ of the insufficiency of the crank pin. The burden of proving this is on it. Its officers knew of the prior breaking of a steel crank pin,of the same size, and no sufficient explanation of that accident is given. They do not show whether they knew the size of the pin, or whether they knew the prevailing practice as to the size of such pins, nor whether, if they did, they made any inquiry whatever as to what the requirements of such crank pins should be, in view of the prevailing practice of employing a much stronger one. Although the boat had been inspected by the United States local inspectors some three or four months before the accident, and the owners employed an engineer to supervise their equipment from time to time, we do not think that they have discharged the burden of proving their want of knowledge or privity.
The decrees are reversed, and the court below is directed to enter a decree in the limitation proceeding, denying the petition, with costs, and a decree in the suit of Rice against the Brooklyn Ash Removal Company in favor of the libelant against the Reichert Towing Line primarily, the Moran Towing & Transportation Company secondarily, any deficiency to be recovered of the Brooklyn Ash Removal Company, with the usual order of reference; costs of this court to the libelant in the same order.