TREATIES Fog, etc. SPEED OF SHIPS TO BE MODERATE IN FOG, &c. ARTICLE 16. teed limitatons Every vessel shall, in a fog, mist, falling snow, or heavy rain-storms, go at a moderate speed, having careful regard to the existing circum- stances and conditions. A steam vessel hearing, apparently forward of her beam, the fog- signal of a vessel the position of which is not ascertained, shall, so far as the circumstances of the case admit, stop her engines, and then navigate with caution until danger of collision is over. Steering and sailing rules. Steering and Sailing Rules. Preliminary-Riskof Collision. Risk of collision can, when circumstances permit, be ascertained by carefully watching the compass bearing of an approaching vessel. If the bearing does not appreciably change, such risk should be deemed to exist. ARTICLE 17. When two sailing vessels are approaching one another, so as to involve risk of collision, one of them shall keep out of the way of the other, as follows, viz.: - (a.) A vessel which is running free shall keep out of the way of a vessel which is close-hauled. (b.) A vessel which is close-hauled on the port tack shall keep out of the way of a vessel which is close-hauled on the star- board tack. (c.) When both are running free, with the wind on different sides, the vessel which has the wind on the port side shall keep out of the way of the other. (d.) When both are running free, with the wind on the same side, the vessel which is to windward shall keep out of the way of the vessel which is to leeward. (e.) A vessel which has the wind aft shall keep out of the way of the other vessel. ARTICLE 18. When two steam vessels are meeting end on, or nearly end on, so as to involve risk of collision, each shall alter her course to starboard, so that each may pass on the port side of the other. This Article only applies to cases where vessels are meeting end on or nearly end on, m such a manner as to involve risk of collision, and does not apply to two vessels which must, if both keep on their re- spective courses, pass clear of each other.