Canadian Aviator, Ltd. v. United States

This was not a starboard hand crossing, for the vessels were not upon steady courses. The “Cavelier” was bound up stream, and in order to get on her course had to, swing around to port substantially 180°. The “Stanton” was also bound up stream through the anchorage ground, a course which required her to pick her way through numerous anchored vessels. She argues, as we understand it, that, in spite of the veering that this entailed, her course — as distinct from her heading — was ascertainable by the “Cavelier,” and was therefore steady; and, that it is not necessary that both vessels should…