There are some opinions that one should not ride on a boat during the 9 days because of danger. I am asking a follow-up on this answer and any similar opinions that prohibit boating.
According to those that would prohibit it because of "danger", is there leniency to allow one to ride a commuter ferry to go to / from work? To me, it poses the same level of "danger" as driving a car or travelling by bus or train. It's that the type of danger is different.