Keep in mind that the incoming vessel could have an emergency situation....
or the other vessel may not be aware of the rules which would bring into
play Hanlon's Razor."Do not attribute to malice that which can be adequately
explained by ignorance"

An excellent answer.
While two vessels CAN pass between the breakwaters, it's not done often being a
bit tight.
I did not view any emergency, though the bad seamanship displayed did alert me
to that possibility. As he passed, he waved and there was certainly no
emergency. I yelled at him about his poor seamanship. He looked hurt and
confused and made no reply. I had 7 girls aboard and simply let it go. He's not
a member of the club.

RB