ls are crossing, so as to involve risk of
collision, the vessel which has the other on her own starboard side
shall keep out of the way of the other.

ART. 20. When a steam vessel and a sailing vessel are proceeding in such
directions as to involve risk of collision, the steam vessel shall keep
out of the way of the sailing vessel.

ART. 21. Where by any of these rules one of two vessels is to keep out
of the way, the other shall keep her course and speed.

ART. 22. Every vessel which is directed by these rules to keep out of
the way of another vessel shall, if the circumstances of the case admit,
avoid crossing ahead of the other.

ART. 23. Every steam vessel which is directed by these rules to keep out
of the way of another vessel shall on approaching her, if necessary,
slacken her speed or stop or reverse.

ART. 24. Notwithstanding anything contained in these rules every vessel
overtaking any other shall keep out of the way of the overtaken vessel.

Every vessel coming up with another vessel from any direction more than
2 points abaft her beam--that is, in such a position with reference to
the vessel which she is overtaking, that at night she would be unable to
see either of that vessel's side lights--shall be deemed to be an
overtaking vessel, and no subsequent alteration of the bearing between
the two vessels shall make the overtaking vessel a crossing vessel
within the meaning of these rules or relieve her of the duty of keeping
clear of the overtaken vessel until she is finally past and clear.

As by day the overtaking vessel can not always know with certainty
whether she is forward of or abaft this direction from the other vessel,
she should if in doubt assume that she is an overtaking vessel and keep
out of the way.

ART. 25. In narrow channels every steam vessel shall, when it is safe
and practicable, keep to that side of the fairway or mid-channel which
lies on the starboard side of such vessel.

ART. 26. Sailing vessels under way shall keep out of the way of sailing
vessels or boats fishing with nets or lines or trawls. This rule shall
not give to any vessel or boat engaged in fishing the right of
obstructing a fairway used by vessels other than fishing vessels or
boats.

ART. 27. In obeying and construing these rules due regard shall be had
to all dangers of navigation and collision and to any special
circumstances which