Plumper,
Good points. I know "in-extremis" is not in the Rules; After doing a lot of research on court cases involving collisions, I realize the court briefings still use the term as it used to be applied. I use the term "in-extremis" more for demonstrating the four stages of the collision avoidance funnel.
I 100% agree with you and it is a very good point. Sound, light and
VHF signals and contacts should be utilized before a Stand-On vessel maneuvers to avoid collision. I tend to use the
VHF when I am in a 45 foot sailboat when I see a large ship or tug with tow. I am not confident these large vessels will hear my "whistle."
Good Stuff!