This document updates plans by Australia to conduct an acoustic biomass survey for krill in CCAMLR Division 58.4.2 (the South West Indian Ocean Sector) in January-March 2006. The survey is intended to produce a new estimate of B0 for this Division so that a revised precautionary catch limit can be established by CCAMLR. . The survey will be conducted from a single ship and will consist of 11 parallel transects between 30° and 80°E. The survey design was presented to WG-EMM for their comment in 1995 and suggested improvements have been incorporated into the final design.