Research vessel Robert E. Hayes gets up on all three sometimes. Technically, it’s called a liftboat. I saw Hayes up on all three spuds last year on the Passaic just downstream from Newark. Thanks to YouTube, you can see it too.
I took these shots last summer in the KVK.
Another liftboat Russell W. Peterson came ashore in a storm on Bethany Beach in Delaware. See Peterson wallow in the surf here.
To see a much larger liftboat, check out Resolution on shipoftheday blog. It’s a spudded vessel designed and built specifically to install coastal wind turbines.