Hello kendras,
sorry, I forgot to tell, the seal is not a separate model but part of the 3D model of the hulls.
I extracted the model and added a (new) texture. I can now be used as separate item:
http://www.mediafire.com/file/41fwuw394tgwit1/Seal.7z
Note, it is a rather plain thing, basically a disc with a texture on it. Also, I guess you need to re-size it; it was made for the Agano, a smaller vessel.