It appears no but we’re doing environmental studies to confirm. It feels like a lot of emission but it’s actually pretty small compared to the scale of the ocean and what people are pumping out in

It will only be ~10 m above the deck. Most of the CH4 is in the troposphere (the part we breathe); very little at higher altitudes.

There’s a short paragraph on the chemistry in the current Wired article on methane and Rob Jackson of Stanford. The author spoke with de Richter, one of the scientists who came up with this approach.