Abstract

Performance of an air circulating tank to reduce the frictional resistance of a ship is experimentally investigated. A 20,000TEU container ship with wide breadth and shallow draft is designed for this investigation. The air circulating tank is built in the double bottom of the ship and reduce the wetted surface by 62%. Resistance tests of the scale model show that the tank can reduce the resistance by 205% at low Froude number. As advanced speed of the ship increase, efficiency of resistance reduction rapidly decreases because of air escape from the tank.

Keywords:
coefficient, froude number, experimentally, container ship, calculation, velocity distribution, resistance reduction coefficient, water flow, reduction coefficient, resistance
This content is only available via PDF.
2015. International Society of Offshore and Polar Engineers
You can access this article if you purchase or spend a download.