There's no windows at the front because that's where the main doors and entry ramps are. As for windows, hovercraft windows regularly are sprayed with salt water from under the skirt anyway, which can lead to salt on them making them difficult to see out of. I've travelled on the Ryde - Southsea craft (the other ones you saw in this video) and generally this usually clears a bit once the window gets wet again. It depends on which way the wind carries the spray. My tip is - the rearmost window seats are the best ones (nearest the engines). I've seen Baien in person during trials, and while I personally have reservations about the Griffon 1200 compared to the AP1-88s they replaced at Ryde, Baien seems to be a significant improvement on the two prototype ones.