The S/Y Sedna IV is a 51 metre (168 ft) three-masted schooner which has been used for scientific expeditions and the filming of documentaries.Built by Abeking & Rasmussen in Germany in 1957 as a Sidefishing Trawler, refitted as a sailing vessel in 1992, she was equipped with a film studio in 2001 when a Canadian film crew acquired her. The ship was previously named Saint Kilda. Sedna IV is fitted out with a cutting room and an equipment room containing high-definition filmmaking apparatus.