Harbourmasters in Wellington and Marlborough are warning protesters planning to voyage across Cook Strait not to underestimate the risks involved in the journey.
A so-called second wave of protesters are planning to travel up the South Island this week, gathering in Waitohi/Picton on Sunday, before heading across the Strait.
They're calling it Dunkirk but many on social media are calling it Dumbkirk.
Marlborough harbourmaster Luke Grogan spoke to Corin Dann.
