She's a high tech fiber-optic cable-layer. The cable is run through the piping at the bow. If you're interested, you can read all about the ship here.
The yellow things are buoys which can be deployed when necessary to mark the ends of the cable. I thought they looked like big searchlights, and had fantasies of the ship searching for giant squid fathoms down in the aphotic zone, but nooooo.
There's a lot of equipment here, but what I like in this photo is the light on the stern (you can tell it's a dark day) and also the seagull. It helps to enlarge the image.
This blog is sponsored by Tapir and Friends Animal Store.