Very cool and creative piece of artwork. At some point I thought it´s just a series of filters over some quick sketch, but looking at it more closely it seems more than just randomly applied filters, intentional and with very strong expression.
This is such an amazing piece of art ... I have a feeling of end of everything. It's like the 4 horsemen of apocalypse ... for boats. I would love to see how you managed to get this ghost - fantomatic waterlike effect.