Yes, but you can make it from water+electricity -- unlike diesel. Turning 'naki gas into hydrogen doesn't make a lot of sense, but you could certainly use all of that spare electricity down south if the smelter stops using it.
Yes I'm disappointed that no video of the north head carnage has emerged. I suspected that it would be good to watch in the forecast conditions, but didn't realise that the torpedo bay wharf was closed and so couldn't get a good look (by the time I realised it was closed it was too late to get up to the top of nth head).
Interesting. I do wonder, though, how much game playing there is in these first boats, e.g. showing things that the teams have no intention of actually doing.