PFP1 (2011 Petrofac NR)https://www.petrofac.com/en-gb/media/news/petrofac-announces-ies-agreement-in-the-north-sea/
"The FPF1 Company has an option to require Petrofac to acquire the upgraded FPF1 on cessation of production"
So, Ithaca and Dyas are the owner today, and they have the option to ask Petrofac to buy back the unit, at a low ball figure.
I understand that the difference between the book value and the market value will not show up in the balance sheet until the FPF1 is being sold, but the real market value is there and would apply if they eventually sell... I'll try to check with some contacts in the maritime industry for that potential market value. I'll let you know.
Thanks to all