On May 14, 1952, defendant’s vessel South America, a Great Lakes passenger steamer, was undergoing final fitting-out in preparation for its first sailing of the 1952 season. Plaintiff, a stewardess aboard the vessel, was going about her duties when she slipped on a stairway outside one of her assigned cabins and fell to the deck, breaking her arm and suffering other injuries. The stairway consisted of three steps, with full length handrails on either side. The steps, which had been painted several days previously with grey deck paint, Were of steel construction with a diamond safety tread pressed into the steel. Plaintiff testified that the steps were damp from rain, that the safety tread had been filled by repeated painting, and that the steps were smooth and exceedingly slippery. She admitted that she had used the same and identical steps many times over six previous seasons and that she had safely negotiated them several times on the day of the accident.

The complaint, brought at law, stated two causes of action: (1) negligence under the Jones Act, 46 U.S.C.A. § 688, and (2) maintenance and cure under the general maritime law. In addition, the complaint alleged that plaintiff’s fall and resulting injuries were caused by defendant’s negligence in “maintaining, equipping, and providing said vessel with a freshly painted shiny and smooth, excessively slippery step.”

Although the record contains some confusing language to the effect that plaintiff was relying solely on a theory of negligence, the trial judge apparently considered the above-quoted allegation as properly raising an issue of unseaworthiness under the general maritime law.^[1] Consequently, both negligence and unseaworthiness were simultaneously tried to a jury in accordance with the customary practice in this Circuit.^[2] The maintenance-and-eure count was not submitted to the jury but tried to the judge, who awarded plaintiff $800.00 in addition to $1,576.03 which she had already received.

At the close of the plaintiff’s case, defendant moved for a directed verdict on the issue of negligence, on the ground that no negligence had been shown, and, in addition, moved for a directed verdict on the issue of unseaworthiness, on the grounds that there was no unseaworthiness because the vessel was not in navigation at the time of injury and that there was no proof of unseaworthiness. The trial court denied both motions after counsel for both plaintiff and defendant had stated their respective views in opposition to and in favor of the motions. At the end of the case, after all the evidence had been received, the defendant renewed his motions, and they were again denied. Subsequently, the trial judge apparently changed his mind on the motion for a directed verdict on the issue of unseaworthiness, for he charged the jury as follows: “ * * * It is my view that the evidence does not show that the ship itself was unseaworthy. That is my instruction as to the evidence in the case.” The negligence issue was then submitted to the jury, which returned a verdict for defendant.

On this appeal plaintiff does not question the award for maintenance and cure, but seeks a new trial on negligence and unseaworthiness. She relies for reversal on the following alleged errors: (1) the[*257] action of the trial court in directing a verdict on the unseaworthiness claim, and (2) an instruction to the jury that the defendant could comply with its duty of due care by acting in accordance with the common practice in the industry. Defendant contends that these alleged errors should not be considered on appeal because they were not properly raised below, and, alternatively, that they do not constitute reversible error.

I

Before turning to these questions we will consider the jurisdiction at law of the court below over the unseaworthiness phase of the case. We do so because it is a jurisdictional question, which we can and should consider on our own motion,^[3] and because recent decisions of this and other federal courts have evidenced concern over the jurisdictional basis of admiralty claims brought on the law side of federal district courts.^[4] Although this is a jurisdictional question, the only significance it has is with respect to the mode of trial, since there is always jurisdiction in admiralty over an unseaworthiness claim. 28 U.S.C. § 1333.

In Paduano v. Yamashita Kisen Kabushiki Kaisha, 2 Cir., 1955, 221 F.2d 615, we held that theré was no federal-question jurisdiction at law over a claim founded on the general maritime law.^[5] If that decision is to be adhered to, some other basis for jurisdiction at law of the court below over the unseaworthiness claim must be discovered. There are several alternative possibilities ; First, if diversity of citizenship is present and the amount in controversy exceeds $3,000, federal district courts have common-law jurisdiction of unseaworthiness claims. 28 U.S.C. § 1332. Unlike the vast majority of diversity cases, the law applied is the federal maritime law rather than state law. Pope & Talbot, Inc., v. Hawn, 1953, 346 U.S. 406, 74 S.Ct. 202, 98 L.Ed. 143; Cannella v. Lykes Bros. S.S. Co., 2 Cir., 1949, 174 F.2d 794, 796, certiorari denied 338 U.S. 859, 70 S.Ct. 102, 94 L.Ed. 526. The result, when there is diversity, is that a seaman can try claims of negligence and unseaworthiness simultaneously to the same jury. Second, if the vessel involved is a Great Lakes vessel “of twenty tons or upward, enrolled and licensed for the coasting trade, and employed in the business of commerce and navigation between places in different states upon the lakes and navigable waters connecting said lakes,” either party can demand and receive a jury trial in admiralty on an unseaworthiness claim. 28 U.S.C. § 1873. Since a seaman is entitled to a jury trial on a negligence claim under the Jones Act, 46 U.S.C.A. § 688, the result is that he can obtain a jury trial on both claims. Although one claim (unseaworthiness) is technically in admiralty, and the other (negligence) at law, there would appear to be no procedural objection to trying them both simultaneously to the same jury. Indeed, since the factual compo[*258]nents of the two claims are virtually identical, it would be foolish to require separate trials. A third possibility is that of pendent jurisdiction. The Jones Act claim for negligence and the maritime claim for unseaworthiness provide seamen with two different grounds of relief for the commission of the same wrong. A judgment on one claim bars a second suit based on the other claim. Baltimore S.S. Co. v. Phillips, 1927, 274 U.S. 316, 321, 47 S.Ct. 600, 602, 71 L.Ed. 1069. Since both claims are based on the same operative facts, they constitute a single “cause of action.” Baltimore S.S. Co. v. Phillips, supra; American Fire & Casualty Co. v. Finn, 1951, 341 U.S. 6, 12-13, 71 S.Ct. 534, 95 L.Ed. 702. Because of the extremely close relation of the two claims and the virtual identity of their factual components, it is arguable that a federal district court, having properly taken jurisdiction at law under the Jones Act over the negligence claim, has jurisdiction at law over the closely related unseaworthiness claim. See Hurn v. Oursler, 1933, 289 U.S. 238, 53 S.Ct. 586, 77 L.Ed. 1148, the controlling case on pendent jurisdiction, in which the Supreme Court held that where there is only one cause of action and jurisdiction is based upon a federal question, two or more grounds for relief may be urged, and, if the federal question is substantial, the federal district court has jurisdiction over the entire cause of action. See Doucette v. Vincent, 1 Cir., 1952, 194 F.2d 834, 840, note 5, and Jordine v. Walling, 3 Cir., 1950, 185 F.2d 662, 670671.

We need not here decide whether there is jurisdiction at law, under the Hurn v. Oursler doctrine, of a pendent claim of unseaworthiness when combined in one action with a substantial and related claim under the Jones Act, since it affirmatively appears from the record that plaintiff “lives” at Kenmore, New York, that defendant is an Indiana corporation, and that the amount in controversy is well in excess of $3,-000.^[6] Since the district court had jurisdiction at law over the unseaworthiness claim because of diversity of citizenship, the plaintiff was entitled to have both her claims submitted to a jury.^[7]

II

Turning to the merits of the case, we think that the trial court erred in greeting a defendant’s verdict as tj unseaworthiness.

There was evidence from which the jury could have found that the steps were so painted and maintained as to be excessively slippery, especially when covered with water from a rain. We. think this was a sufficient showing of unseaworthiness to entitle plaintiff to go to the jury. See e. g., Krey v. United States, 2 Cir., 1941, 123 F.2d 1008; Grillea v. United States, 2 Cir., 232 F.2d 919.

Defendant, relying on Rule 51 of the Federal Rules of Civil Procedure, 28 U.S.C., contends that plaintiff waived this error because her counsel did not, before the jury retired, state that he objected to the action of the trial court and specify the grounds of his objection. However, we do not think that Rule 51, dealing with objections to the court’s instructions to the jury, is applicable here. Even though the action of the trial court was presented to the litigants and the jury as part of the charge, it was in reality a delayed ruling by the trial judge granting the prior motion of defendant to direct a verdict against plaintiff on unseaworthiness on the ground that the proof was not sufficient to permit that issue to go to the jury. Rulings on motions and evidence are governed by Rule 46 rather than Rule 51. Rule 46 provides: “Formal exceptions to rulings or orders of the court are un[*259]necessary; but for all purposes for which an exception has heretofore been necessary it is sufficient that a party, at the time the ruling or order of the court is made or sought, makes known to the court the action which he desires the court to take or his objection to the action of the court and his grounds therefor; * * *.” [Emphasis added.] Plaintiff complied with this rule: when defendant first sought its ruling, plaintiff’s counsel vigorously objected, and indicated to the court that unseaworthiness was sufficiently alleged by the complaint and proved by the evidence so that the issue should be submitted to the jury. Plaintiff’s position having been made known to the court at the time the ruling was first sought, she was not required to repeat the objection when defendant renewed its motion and when the court granted the motion. Keen v. Overseas Tankship Corp., 2 Cir., 1952, 194 F.2d 515, certiorari denied 343 U.S. 966, 72 S.Ct. 1061, 96 L.Ed. 1363; Sweeney v. United Feature Syndicate, 2 Cir., 1942, 129 F.2d 904; Williams v. Powers, 6 Cir., 1943, 135 F.2d 153, 156; Green v. Reading Co., 3 Cir., 1950, 183 F.2d 716, 719. A point is properly preserved when a party has made known his objection to the trial court and stated the grounds on which he bases his objection. Keen v. Overseas Tankship Corp., supra; Irvin Jacobs & Co. v. Fidelity & Deposit Co. of Maryland, 7 Cir., 1953, 202 F.2d 794, 800-801, 37 A.L.R.2d 889. Since the trial court committed reversible error in directing a verdict as to unseaworthiness, the plaintiff must have a new trial on that issue.

Ill

The alleged error in the charge with respect to negligence is governed by somewhat different considerations. Defendant’s counsel within the hearing of the jury requested the court to charge “that as a matter of law it is not necessary for the defendant to provide the best or the newest and latest stairs or paint nor that the ship be accident proof. It is enough if the steps and paint provided are commonly used and accepted in the industry at the time.” The court replied: “I will so charge.” Plaintiff remained silent throughout this colloquy, and the case was then submitted to the jury.

Rule 51 of the Federal Rules of Civil Procedure provides: “ * * * No party may assign as error the giving or the failure to give an instruction unless he objects thereto before the jury retires to consider its verdict, stating distinctly the matter to which he objects and the grounds of his objection. * * * ” The purpose of this salutary rule is to expedite the administration of justice by insuring that the trial judge is informed of possible errors so that he may have an opportunity to reconsider his charge, and, if necessary, to correct it.^[8] While we recognize the discretionary power of an appellate court in a proper case to review of its own motion errors not saved by proper objection,^[9] we think this dis[*260]cretion should be exercised sparingly and only in exceptional cases.^[10] Without attempting to state a rule or delineate situations in which it would be proper to exercise this discretion in favor of an appealing party, we think the language in United States v. Atkinson, 1936, 297 U.S. 157, 160, 56 S.Ct. 391, 392, 80 L.Ed. 555, and quoted with approval in Johnson v. United States, 1943, 318 U.S. 189, 200, 63 S.Ct. 549, 87 L.Ed. 704, vividly calls to mind the type of situation in which we would be favorably disposed to review alleged errors despite the failure of the appealing party to raise his objections below: “In exceptional circumstances, especially in criminal cases, appellate courts, in the public interest, may, of their own motion, notice errors to which no exception has been taken, if the errors are obvious, or if they otherwise seriously affect the fairness, integrity, or public reputation of judicial proceedings.” [Emphasis added.]

While we have considerable doubt as to whether the alleged error in -the charge is of this exceptional character, we have decided to consider it here * because the case is being remanded for a new trial on another ground. See Dowell, Inc., v. Jowers, 5 Cir., 1948, 166 F.2d 214.

The trial judge charged the jury, at defendant’s request, that “it is enough if the steps and paint are commonly used and accepted in the industry at the time.” This instruction was erroneous. While the customary practice of the industry is relevant and admissible, the defendant’s standard of care in a negligence action is not limited to complying with usual practices in the industry or trade. Wabash R. Co. v. McDaniels, 1883, 107 U.S. 454, 460-461, 2 S.Ct. 932, 27 L.Ed. 605; Poignant v. United States, 2 Cir., 1955, 225 F.2d 595; Uline Ice, Inc., v. Sullivan, 1950, 88 U.S. App.D.C. 104, 187 F.2d 82; The T. J. Hooper, 2 Cir., 1932, 60 F.2d 737.

Consequently, plaintiff is entitled to a new trial on the issue of negligence as well as that of unseaworthiness.

Reversed and remanded for a new trial.