Any idea...

...what this is?

(Click to embiggen...a little)



I just now glanced up and noticed this...boat?...gliding by. I grabbed the camera, but this was the only shot I managed to get of it.

At first glance, it looked, for all the world, like a pirate ship...without the sails...with a rubber dingy (I think) hangin off the stern.

I tried to use Photoshop to enlarge it, but it didn't help much.

UPDATE

Commenter Lisa mentioned that it might be the replica of the Nina. I checked the

schedule

and I bet she's right. Dang! Wish I could have gotten a few more photos.