A superior mirage caused by warm air resting on patches of colder air in an atmospheric duct that acts like a refracting lens. Objects on the horizon could appear to be mirrored, distorted, or float. This form of mirage could be the reason for the Flying Dutchman Legend.
SS Tyrifjord,owned by the A/S Den Norske Amerikalinje, Christiania was damaged in an air attack, off Stavesnes on 19th September 1944. She was subsequently beached and sank later when she foundered while under tow.