Found this video on YouTube. It's all of Kitsap Transit's fast ferries crossing Puget Sound at the same time. I'm not sure if that really happened or if it's just some really tricky video editing piecing the different ferries together to make it seem like they were all travelling together. It may actually be real. They may have put all of the ferries together as a promotional thing or something. It appears to have been at SeaFair time, given that you can see the Blue Angels flying past the Space Needle in part of this video. In any case, it's a pretty cool video showcasing the different vessels Kitsap Transit operates.