It looks like they're just in front of the ship's bulb, and I guess normal speed for this ship is about 15 knots. No high speed for a dolphin! This video is shot as the MS Midnatsol was on it's way to Øksfjord in Finnmark in Northern Norway. Beautiful animals!
The video can also be watched on Hurtigruten's blog from the Norwegian coast: Hurtigruten365