The Aanderaa Optode 3835 (S/N 1415) was deployed on 2015-09-23 on Horseshoe Bay - Departure Bay Ferry Route. This ferry route goes between Horseshoe Bay terminal in West Vancouver, BC and the Departure Bay terminal, Nanaimo BC. This device is a Oxygen Sensor. Oxygen sensors measure dissolved oxygen concentration in seawater. It was deployed on a mobile platform. Data from this deployment were archived and made available through Ocean Networks Canada's Oceans 3.0 digital infrastructure, with quality assurance and derived data products following established practices.