Captain Lumsden's paper was written for the convention held in Düsseldorf on 16, 17 and 18 May 1961 (Journal, 14, 480). It describes the siting of harbour radar equipment from the point of view of giving warning of approaching ships to the shore authorities, giving navigational assistance to shipping, and port surveillance. In most cases the choice of site for the aerials and displays will have to be a compromise with these three uses of shore radar in mind.

The three main elements of a harbour radar are the scanner, which must be sited to survey the area of interest, with the transceiver close by to avoid waveguide losses, and the displays which may be required in a room close to the scanner or in a room distant from it.