One year at DragonCon in Atlanta, there was a JAWS group including the mayor. They took a suit jacket and applied iron-on, anchor-shaped patches to it. I've seen the patches at Wal Mart and Hancock Fabrics.
Guys, let's be reasonable here. This is not the time or the place to perform some sort of half-assed creation of anchor fabric. And I am NOT going to stand here and see those things ironed on and then see those little anchors fall off all over the dock!!!