All discussion as to the propriety or impropriety of the navigation of the Gladiator, a subject discussed at some length in the appellee’s brief, is eliminated by reason of the circumstance that she has not appealed. Not having done so, she cannot be heard here to dispute the finding that she was guilty of a fault contributing to the collision.

As to the Senff, we cannot overlook the circumstance that all the witnesses were seen and heard by the District Judge, and that the propriety of her navigation is largely dependent upon the conclusions reached as to specific facts upon conflicting testimony. After the exchange of two-blast whistles with the Gladiator, she was entitled to proceed and cross the bows of the latter and to expect the latter to assist in such maneuver. And, like other vessels thus privileged, it was her duty to hold her agreed course and her speed *682as long as it was possible for the other vessel to avoid her, in the absence of some distinct indication that the Gladiator was about to fail to keep her promise to swing to port.- It was soon manifest, however, that for some reason or other the Gladiator was not conforming her course to her signals, and the'district judge held that such a condition of affairs continued so long that it should have been obvious to the Senff that the limit of sa'fety was passed, and that she herself should arrange her navigation accordingly — by stopping and backing,, since she could not swing any further- to port. Since the testimony varies greatly as to the distance traversed by the Gladiator without making her promised change to port — some witnesses putting the collision within 25 . to 50 feet and others 400 feet from the Brooklyn shore — we are satisfied that the conclusions of the District judge should not be disturbed.

The decree is affirmed, with costs of this court to the appellee.