"As for Ocean, excuse my civvy ignorance, but I thought Ocean wasn't that old?! How can it be end of life already?? and what problems has it been encountering? I seem to think it wasn't built as a hardened warship as such, and built to commercial specification, but I don't know if I remember rightly there"
She was built to commercial standards and has been worked very hard ever since. She was originally designed for a 20 year life (2018), but is by all accounts a maintenance nightmare and a lot of hassle. Ocean is a good example of what happens when you try to do maritime aviation on the cheap!