I hope I am not treading on Keelman's toes by posting this one. It came up on the TugTalk forum recently as having been posted on yet another site and I recognised the username and the quality of the photo. Nothing known about UNDINE and all I can find on Mid-Tyne Shiprepairing Co Ltd is that they were based at Dunston (as opposed to Mid Tyne Ferries based at Hebburn).