抄録
The present paper provides the results of an investigation on STEP (Spray Tearing Plate) for reducing the added resistance in waves.The research has been started to develop a device for suppressing spray; thin wave like a film that is generated around the bow above the waterline when a ship runs in waves. The effect of STEP is examined through tank tests with a model of 2500TEU container ship equipped with bolsters for anchors. The optimum shape of STEP reduces the added resistance in waves by 10% at designed speed under the condition of summer full load in short head waves of 3 meter height. The 3% reduction of CO2 emission is indicated by the tank test results and calculation for ship performance in head waves and winds of Beaufort scale 6.
