On April 3, 1969, plaintiff Dominick Pampillonia was employed as a marine carpenter by C. C. Lumber Co., Inc., now Court Carpentry and Marine Contracting Co. (employer). He was injured that day while working aboard the SS Jill Cord which was owned and operated by Concord Line, A/S (shipowner).

Plaintiff claimed to have been injured when he slipped and fell on grease or other *477slippery substance on the vessel’s weather deck near No. 5 hatch on the starboard or off-shore side. Stevedores had loaded and stowed the cargo aboard the vessel which lay moored at Pier 2 in Brooklyn. The shipowner had contracted with plaintiff’s employer to secure the cargo aboard the vessel. This included chocking, boxing and lashing the cargo.

A jury verdict in favor of plaintiff in amount of $80,000 was returned on December 18, 1973 against the shipowner for breach of its warranty of seaworthiness.1 Immediately following the jury trial, the shipowner’s indemnity claim against plaintiff’s employer was tried to the court without a jury. The indemnity claim was based on the employer’s alleged breach of its warranty to perform the ship carpentry work in a workmanlike manner.

The only additional testimony received at the trial of the indemnity claim was that of Captain William Wheeler, an expert witness called by the shipowner. He testified, based on his extensive experience as a ship’s officer and as a stevedore superintendent, concerning the custom and practice of a ship’s carpenter in using grease during the process of lashing down cargo and the practice of plaintiff’s employer of using grease in lashing operations which he had observed over the years.

Based on the entire record, Chief Judge Mishler concluded, in his memorandum decision of December 21, 1973, that the shipowner had established by a fair preponderance of the credible evidence that the employer had breached its warranty to perform the ship carpentry work in a workmanlike manner. The court s conclusion was based on its specific findings of fact that the employer had placed or dropped grease in an area normally used for passage by longshoremen; that the employer had allowed grease or other slippery substance to remain in an area used as a passageway by plaintiff and other longshoremen, thereby creating a dangerous condition and an unsafe place to work; and that the employer had failed to eliminate the “slippery condition” as required by Section 1918.91(c) of the Safety and Health Regulations for Longshoring, promulgated by the United States Department of Labor. 29 C.F.R. § 1918.91(c) (1975).

We hold, based on our careful review of the record, that Chief Judge Mishler’s findings of fact are not clearly erroneous but are supported by substantial evidence.2 Notwithstanding the failure of the expert witness to use the precise term “custom”, the import of his testimony was that it was a universal practice to use grease to lubricate lashing components. This evidence of custom permitted the inference that the employer used grease. That finding, in conjunction with the direct evidence that plaintiff had slipped on grease, adequately supported the critical finding that employees of plaintiff’s employer had dropped grease on the deck and that on that grease plaintiff had slipped and fallen.

Affirmed.