The design had to be highly decorative and yet not overpower the fish above. Finally I settled on five elements to the design. A riveted ring tied the design to the oval around the fish. A gear signified the mechanical theme. A compass rose made it nautical. The scroll provided a place for the shipyard name. And a 'D' plopped in the middle was a fun way to sign it (this being a 'D-CLASS' vessel and all.
The drawing below is the ten minute scribble - right out of my sketchbook, done with a ballpoint pen. It would make a fine tattoo on the captain's arm I'm sure.
As always it will be refined and altered as necessary as I build the 3D files in EnRoute and Illustrator. Once I'm done routing hand work and sculpting will embellish and refine it even more. I look forward to the process of bringing this idea to life.