A trimaran type WIG effect ship with a minimum waterplane area is disclosed. The present invention also relates to a display comprising a substrate, a liquid crystalline layer thereon, wherein the liquid crystalline layer comprises a nematic host, at least one chiral dopant, a photo-reacted compound, and a triplet sensitizer, and at least one transparent conductive layer. The prism film includes a first surface having a series of cylindrical lenses adjacent the liquid crystal display panel and a second surface, opposite the first surface, having a series of non-contiguous prisms adjacent the directional backlight. When incremental forming is completed, the tool on the spindle is replaced with a straightening tool 200, and hot air is blown out from the straightening tool 200 to anneal the edge lines 20a and 20b of the form portion 20 and to eliminate process strain. Thereby, a failure in charging may be brought about in a toner at the portion, further, a failure in an image may be brought about on a sheet and therefore, by bringing about the failure in the image, an operator may be informed that a timing of interchanging the toner is reached.