Tests were conducted on a 1:100-scale model of an area along the beach at Honolulu, Hawaii, to investigate wave action and related phenomena pertinent to the proposed construction of a large artificial island for recreational and associated activities. The proposed island will be constructed between two existing facilities: Kewalo Basin, primarily a commercial fishing-boat harbor, and Ala Wai Boat Harbor, a pleasure craft harbor. These two harbors and sufficient offshore area to permit generation of the required test waves were included in the model. The study included an investigation of (1) currents and possible pollution in the proposed recreational areas and (b) remedial plans for the reduction of undesirable wave heights in the two existing harbors. Model equipment included wave-generating and wave-measuring apparatus, a water and simulated pollution inflow system, and apparatus for the simulation of a tidal cycle in the model. (Author).