Three of the marks, the two committee boats on the ends of the starting line and Mark 1, an anchored swimming float, are both marks and obstructions, but they are not so large that they are continuing obstructions. Mark 2, String Bean Island, is both a mark and a continuing obstruction. Marks 3 and 4, small inflated buoys, are marks but are not large enough to be obstructions. Sven, beating on starboard tack, is an obstruction to both Leif and Lars, who are beating on port tack. A trolling fishing boat moving just slightly slower than Beret and Axel, and in the same direction, is an obstruction to each of them. However, even though it could take them a minute or so to pass it, it is not a continuing obstruction because a new sentence has been added to the definition Obstruction stating, "A vessel under way
is never a continuing obstruction." Whether or not such an obstruction was a continuing obstruction under the old rules was often debated and impossible to determine; now we know.