When navigating in a narrow channel or fairway (canal angosto) under COLREGs Rule 9, what rule applies to small sports craft under 20 meters in length?

1. They must keep as near to the outer limit of the channel which lies on their starboard side as is safe, and shall not impede the passage of a vessel which can safely navigate only within such channel
2. They have absolute right-of-way over all large commercial ships and ferries
3. They must always anchor in the middle of the channel when visibility drops
4. They must navigate on the port side of the channel to stay clear of outgoing ships