Got to love the thinking behind this:
Picture the meeting:
"How do we stop these boats from leaving France?"
Reply: "We could maybe sink them?"
"What if we jabbed something sharp into them, would they sink?"
"Well, I don't know if jabbing something sharp into something that's full of air would make it deflate and sink"
"Perhaps we should carry out a TRIAL, and get the Brits to pay for it!!"
Duh!!!!!!!!!