HELIDECK - OBSTACLE LIMITATION SURFACES

HELIDECK - OBSTACLE LIMITATION SURFACES A heliport located on a fixed or floating offshore facility such as an exploration and/or production unit used for the exploitation of oil or gas. Shipboard heliport. A heliport located on a ship that may be purpose or non-purpose-built. A purpose-built shipboard heliport is one designed specifically for helicopter operations. A nonpurpose-built shipboard heliport is one that utilizes an area of the ship that is capable of supporting a helicopter but not designed specifically for that task. Winching area. An area provided for the transfer by helicopter of personnel or stores to or from a ship. For helidecks that have a 1 D or larger FATO it is presumed that the FATO and the TLOF will always occupy the same space and have the same load bearing characteristics so as to be coincidental. For helidecks that are less than 1 D, the reduction in size is only applied to the TLOF which is a load bearing area. In this case, the FATO remains at 1 ...