The Imperial Seal of Japan is a mon or crest used by members of the Japanese Imperial family. Under the Meiji Constitution, no one was permitted to use the Imperial Seal except the Emperor of Japan, who used a 16 petal chrysanthemum with sixteen tips of another row of petals showing behind the first row. So each member of the Imperial family used a slightly modified version of the seal. Shinto shrines either displayed the imperial seal or incorporated elements of the seal into their own emblems.(http://en.wikipedia.org/wiki/Imperial_Seal_of_Japan)
made in Keltos
This
3D model of chrysanthemum is for the bow of the Mogami or any other IJN warship (Yamato...) but the model will then have to be adjusted. I made it according to the picture above.
@Miner1436 : I made it so you can quit looking on the web for one 
Keltos
download link .obj format :
http://files.filefront.com/chrysant2rar/;12909894;/fileinfo.html