As part of the KROP - Kongsfjorden Rijpfjorden Observatory Programme, UiT The Arctic University of Norway and The Scottish Association for Marine Science maintain a marine observatory in the high-Arctic location Rijpfjorden, Svalbard, since 2006. The observatory consists of an array of CTDs, temperature loggers, ADCPs and a sediment trap, in addition to various other instruments or installations that change from year to year. This document contains the mooring diagram for the deployment year 2020-2021. CTD and ADCP data is published at the Arctic Data Centre (https://adc.met.no/). Some previous data is available from NIRD (https://archive.sigma2.no/). All metadata is indexed by the SIOS data access portal (https://sios-svalbard.org/).