NOTE: This propeller selector, and the information it provides, is to be used only as a general reference guide. Results will differ, based on various factors including, but not limited to, application, conditions, and load. More accurate information for a particular boat/application may often be obtained from the boat manufacturer. The most effective method to select the proper propeller for a particular boat and engine application (based on usage and needs) is to test various propellers directly on that boat. Part numbers are provided for reference only, and may change at any time.
The Word Knowledge section of the test gauges your ability to recognize the meaning of words both individually and when used in a sentence. A question may be phrased as, “‘Antagonize’ most nearly means: embarrass, struggle, provoke, or worship.” Because there are so many words in the English language, you may find it difficult to study the specific words on the test. However, striving to improve your language and vocabulary usage with a practice test like this one can help you not only in preparing for the ASVAB test but also in your career and personal life. The CAT-ASVAB test has 16 questions in 8 minutes, while the paper-and-pencil version has 35 questions in 11 minutes.
The Axiom is the joker in our pack. It is not a folding propeller, but it does have a revolutionary blade profile and section, if you will pardon the pun, and has never been tested on a yacht before, so we just had to put it into our trials to see how it compared. As the photograph shows, the blade profile is rectangular, while the blade section is almost S-shaped, and symmetrical in ahead and astern, with no twist. Its designers claim it gives greater thrust and stopping power, together with lower wash. So how did it stand up? Well the charts show the story, with its stopping time nearly a second better than any other model, and its side thrust again the lowest by far. However this was at the expense of lower top speed, which suggests some more tweaking is needed, but it is still one to watch.