Here are a couple of the applicable rules to consider.
Note the specific rule for vessels less than 20 metres or a sailing
vessel (any length) in a narrow channel.
Note the specific rule on overtaking in narrow channels.
There are also rules on safe speed which I am happy to provide to help
the discussion.

People with more savvy than any of use created and continue to improve
the rules. It is up to us to learn them.

Rule 9

Narrow Channels--International

(a)A vessel proceeding along the course of a narrow channel or fairway
shall keep as near to the outer limit of the channel or fairway which
lies on her starboard side as is safe and practicable.

(b)A vessel of less than 20 metres in length or a sailing vessel shall
not impede the passage of a vessel which can safely navigate only within
a narrow channel or fairway.

(d)A vessel shall not cross a narrow channel or fairway if such crossing
impedes the passage of a vessel which can safely navigate only within
such channel or fairway. The latter vessel may use the sound signal
prescribed in Rule 34(d) if in doubt as to the intention of the crossing
vessel.

(e)(i)In a narrow channel or fairway when overtaking can take place only
if the vessel to be overtaken has to take action to permit safe passing,
the vessel intending to overtake shall indicate her intention by
sounding the appropriate signal prescribed in Rule 34(c)(i). The vessel
to be overtaken shall, if in agreement, sound the appropriate signal
prescribed in Rule 34(c)(ii) and take steps to permit safe passing. If
in doubt she may sound the signals prescribed in Rule 34(d).

(ii) This Rule does not relieve the overtaking vessel of her obligation
under Rule 13.

Rule 13

Overtaking--International

(a)Notwithstanding anything contained in the Rules of Part B, Sections I
and II, any vessel overtaking any other vessel shall keep out of the way
of the vessel being overtaken.

(d)Any subsequent alteration of the bearing between the two vessels
shall not 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.