4 thoughts on “Waterjet Propulsion for Naval Vessels”
Well, as was the case with the previous versions of the article this is simply a list that gives no insight into why waterjets are installed on these particular vessels and not others. Also still no indication of how inefficient waterjets are at lower speeds, which will be where most of these vessels will spend most of their time.
My understanding is that they are relatively efficient at high speeds but inefficient at low speeds. The German built South African frigates sighted in the link play to the strengths of the different systems, with props for low speed and waterjets for high speed. There is a more complete explanation here: http://en.wikipedia.org/wiki/Valour_class_frigate#Design
Still the primemovers for the Valour Class and the National Security Cutters is very nearly the same horsepower and the Valour does not seem to have any significant advantage.
Well, as was the case with the previous versions of the article this is simply a list that gives no insight into why waterjets are installed on these particular vessels and not others. Also still no indication of how inefficient waterjets are at lower speeds, which will be where most of these vessels will spend most of their time.
No idea about their efficiency at ship scales, but on boats they are very inefficient.
My understanding is that they are relatively efficient at high speeds but inefficient at low speeds. The German built South African frigates sighted in the link play to the strengths of the different systems, with props for low speed and waterjets for high speed. There is a more complete explanation here:
http://en.wikipedia.org/wiki/Valour_class_frigate#Design
Still the primemovers for the Valour Class and the National Security Cutters is very nearly the same horsepower and the Valour does not seem to have any significant advantage.