Notes:
A newcomer on the Isle of Man's Mountain Circuit, Swedish rider Joakim Karlsson was obliged to wear an orange jacket over his leathers, during the first practice session, on Saturday, 28 May 2005. Two days later, he participated in the second practice session, riding his #77 Suzuki GSX-R 1000 entered in the Superbike race, scheduled to be held the following Saturday.

Joakim Karlsson was fatally injured in Monday night, 30 May 2005, when his bike appeared to negotiate too fast the right-hand Douglas Road Corner in Kirk Michael, on his first lap of the session. He began to brake hard but the machine slid along the roadway and he fell down, colliding with the gate pillars of a house. Death was almost instantaneous.

Although Joakim Karlsson was an experienced rider in Scandinavia, he was making his first appearance on the Island. He made his debut in the early 1980 but retired from the sport in 1990 and returned to racing in 2004, after a 14-year hiatus, competing in Scandinavian events. A 39-year-old single man, he was survived by his partner, Pernilla and their seven-year-old daughter. He was a mechanic by trade, living in Habo, Jönköping county in southern Sweden.

• Book "Isle of Man TT & MGP Memorial - 1907-2007" by Paul Bradford, The Copy Shop, 2008, ISBN 978-0-9560151-0-5, page 217.
• Website Bike.se, article "Svensk avled på Isle of Man", page http://www.bike.se/nyheter/visa.php?id=539 .
• Website AUTOSPORT → Forums → The Nostalgia Forum, thread "Speed's Ultimate Price: The Toll", page 48, posting by "LB", message http://forums.atlasf1.com/showthread.php?postid=2050827#post2050827 citing website http://www.iomtt.com/news/FullStory.asp?StoryID=1805 .
• E-mail by Herman Looman, dated 18 February 2007.
• E-mail by by Paul Tipler, dated 13 June 2011.
• E-mail by Tomas Karlsson, dated 15 April 2016, citing the Swedish book of death during the 20th Century.