Model Tests on a Bulk Oil Carrier with Twinnacelle Stern

摘要

The report describes tests on a model of a supertanker fitted, consecutively, with a conventional twin-screw stern and a twin-nacelle stern. The results show that the latter design is superior to a conventional design with respect to power requirement and course-keeping ability and produces an acceptably regular wake in way of the propeller disk. Inasmuch as propeller-induced vibrations are becoming increasingly troublesome as speed and power of ships increase, the twin-nacelle stern arrangement would seem to be an excellent arrangement for highpowered, high-block-coefficient vessels. (Author)