A low speed retrofit bulbous bow that is capable of reducing resistance over a wide speed and displacement range has been designed for the T-AO 187 class ships. Preliminary model towing tests to simulate bulbs of different volumes and locations were performed with simple bodies of revolutions fitted to the stem of a T-AO 187 model. Data from these model towing tests aided in selecting the volume and location of the final bulb design. Resistance and propulsion model towing tests confirmed that a small volume bulb reduces resistance over a wide speed and displacement range in calm water. The bulbous bow designed for the T-AO 187 class ships reduces resistance across the entire speed range, 10 to 22 knots, at design displacement and provides for reduced fuel consumption.

This content is only available via PDF.
You can access this article if you purchase or spend a download.