I'd go with one of these. 
[img]https://s-media-cache-ak0.pinimg.com/736x/87/60/73/87607394e2523ad51d00fa057187d991.jpg[/img][hr]
[img]https://s-media-cache-ec0.pinimg.com/736x/b1/48/dc/b148dc1115d98ed24a50faddead52b31.jpg[/img][hr]
[img]http://conceptartworld.com/wp-content/uploads/2013/07/Yongjae_Choi_Indus_Concept_Art_20.jpg[/img][hr]

I like the first two of these best, but it's your choice. :P Some of them looked too much like pirates.