The first CCAMLR Scheme of International Scientific Observation workshop (WS-SISO) was held in Buenos Aires in 2017, and discussed and agreed  revisions to observer logbooks for all CCAMLR fisheries (see SC-CCAMLR-XXXVI/08). This paper summarises the proposed changes to the observer  logbooks for the longline and finfish trawl fisheries, and outlines their introduction leading up the proposed adoption for the beginning of the 2019 fishing season.