KLC Lewis wrote
Course changes should be made by the stand-on
skipper at sufficient distance that there will be no risk of collision
as soon as the stand-on skipper decides that the give-way vessel is
NOT going to change course. Yes, the give-way skipper is wrong not to
change course. But insisting on "right of way" is even wronger.

Sal's Dad wrote:
My understanding of the situation is that it was Roger's OBLIGATION to
maintain his course and speed. Not to use (or even own!) a radio,
not to have a working autopilot, not to do ANYTHING else, until
collision appeared imminent. THEN he is obligated to take evasive
action, as he did.

Just to clarify the above remarks:
The rules governing these situations, Like several of the rules, allow
different actions under certain circumstances.
(the following from Charlie Wing's study guide)
Part B, RULE 17
Action by Stand-on Vessel:
The stand-on vessel is required to maintain course and speed.
If the give-way vessel does not take early and obvious action, then the
stand-on vessel *may* take action to avoid collision, except for
altering course to port for a give-way vessel on her port. If the
situation deteriorates to the point where collision cannot be avoided by
action of the give-way vessel alone, then the stand-on vessel *must*
take action, including altering course to port if that is judged safest.

(Notice how the above rules do not take into account any special
circumstances like, for instance, if the stand-on vessel cannot change
course to starboard due to close rocks she is passing, but cannot change
to port where the give-way vessel is approaching. This is where the
following rules come in.)

(Notice how the following rules don't mention anything about a stand-on
or give-way vessel. That means it is *everyone's* responsibility to
avoid collision, no matter who is 'right' or 'wrong'.)

RULE 6
Safe Speed
A vessel is required to limit her speed so that she can avoid collision
and be stopped within a distance appropriate to the prevailing
circumstances and conditions.
RULE 8
Action to avoid collision
(a) If you must take action to avoid collision, the action must be
substantial and early enough to indicate clearly to the other vessel you
are taking action.
(b) Changes of course and/or speed should be large enough to be obvious
to the other vessel.
(c) Change of course is often preferable to change of speed, unless it
will result in another bad situation.
(d) The action must result in passing at a safe distance.
(e)If necessary, a vessel shall (must) slow or stop in order to avoid
collision.