CHIRP does seem to be the answer, initially, but the question still remains; WHAT IS GOING TO BE DONE about this dangerous and expensive (to innocent vessels) practice? There still appears to be no direct come-back against the persons leaving poorly marked obstructions. It is all well and good reporting incidents but if CHIRP turns out to be yet another toothless tiger we are all wasting our time and effort.

Any fool can take the helm when the sea is calm!!!
AYE AYE