Once more trawling through my archive, if only to avoid repeated photographs from Brazil, here is the Bourbon Petrel on its way, as a brand new ship, through the Bosphorus. It is one a a pretty new breed of offshore vessel, the seismic support ship. As seismic ships have developed becoming larger, and capable of deploying large numbers of streamers occupying a wide area of sea, they have become more and more reluctant to reel them in. Hence the support ship, which can carry stores, refuel the mother ship, transfer personnel, even tow if necessary and importantly scare other ships away. There are a few about now, but there is no indication about how busy they are.
Photo by Olaf Kuhnke in 2014 and posted here on 24th February 2017.