Originally Posted by
Bmach
Actually in the marine environment the vessel being passed must maintain course and speed till overtaken. So they also have responsibility when being passed.
That's true, and similar rules apply on roads, and by extension on shared bike/pedestrian paths. However, that applies when the pass is in progress, it's still the responsibility of the passing boat, car, or bike to determine that the pass can certainly completed safely, assuming the one being passed doesn't do anything stupid.
This is why we announce passes, but let's not shunt the thread to the
on your left siding