Apparatus and Method for retrieving injured person from confined space

An apparatus comprises: a plurality of support members 10a, 10b having upper and lower surfaces; the ends of each support member being configured to engage with a structural element 2 of a structure and/or another support member 10a, 10b. The support members may include protrusions on the lower surfaces to restrict lateral movement of the support members. The apparatus is preferably used to rescue an injured person from a tank within a ship or similar confined space by sliding the person along the apparatus from a first end to a second end before detaching the support member from the first end and adding it to the first end.