I took a stroll down the Shelley Banks, along the South Wall, looked back and marveled at the setting sun over Dublin. I was quietly going about the business of taking a panoramic sunset shot, each of the four exposures half a minute, when I became aware of this quiet, calm sensation of something extremely large passing quietly nearby. The silence of this ship was surprising, a barely audible whoosh and low frequency rumble was all there was to be heard. Which explains why I was a bit late turning the camera round to it.