Describes autonomous components of the Arctic observing system for ocean and sea ice measurements that were implemented during the first field season under INTAROS. Instruments and platforms described in D3.4 drift freely on the sea ice or in the water column (ice tethered platforms, ice buoys and floats), move along preprogrammed tracks (gliders) or measure autonomously at fixed locations (deep ocean moorings). An autonomous sensor package (FerryBox) and drone-based sensors are used to collect observations from the ships of opportunity.