Commercial thinning can increase value and net revenue by making some wood available early, by producing larger trees at rotation, increasing employment, and overcoming wood supply problems. Although rarely practised in the past in the province, it has recently become of great interest, particularly in the 1940s plantations of coastal Douglas-fir. This report documents growth and yield following a moderate, double-entry commercial thinning in a 50-year-old coastal Douglas-fir stand on a good site on Vancouver Island. It is based on 35-year remeasurements and observations.