Here is the new Maersk Master, known by Maersk for some reason as the first of the "Starfish" class and by the designers as the SALT 200. There are a further five of the class due later this year. The ships are 95 metres long and have five engines delivering 23,000 bhp giving them a bollard pull of 230 tonnes. One assumes that the extremely large accommodation block contains the ROV hanger, and very much in the Maersk style the anchor-handling and towing winches are fully enclosed at the forward end of the working deck.

There are a couple of things which I notice form the spec sheet. the first is that there is so much thruster power available that 7000 bhp can be used to propel the ship sideways, and with that much top hamper it might all be needed, and apparently it only carries 290 m3 of fuel for the ship (as opposed to fuel for cargo)  which only gives it six days duration at full speed.

Photograph taken the other day by Ian McDougall as the ship entered Aberdeen and posted here on 8th May 2017.