(b.) Sailing-vessels under way shall use a fog-horn.
(c.) Steamships and sailing-ships, when not under way shall use a bell.
STEERING AND SAILING RULES.
TWO SAILING-SHIPS MEETING.
Art. 11.—If two sailing-ships are meeting end on, or nearly end on, so as to involve risk of collision, the helms of both shall be put to port, so that each may pass on the port side of the other.
TWO SAILING-SHIPS CROSSING.
Art. 12.—When two sailing-ships are crossing so as to involve risk of collision, then, if they have the wind on different sides, the ship with the wind on the port side shall keep out of the way of the ship with the wind on the starboard side, except in the case in which the ship with the wind on the port side is close-hauled, and the other ship free, in which case the latter ship shall keep out of the way. But if they have the wind on the same side, or if one of them has the wind aft, the ship which is to windward shall keep out of the way of the ship which is to leeward.