Battery Power Rating - What does âAh' mean? Finding the correct battery size for your requirement can prove difficult, with terminology appearing somewhat confusing. Most lead acid batteries are manufactured to 2V, 6V or 12V, however the 'Ah' rating can be greatly varied. So what does âAh' mean and how does this affect your choice?
On the other hand a planing hull is like the wing of an airplane and as speed increases, it creates lift and rides on top of the water, just like your flat hand lifts in the wind. A good example is a regular surfboard.
in many cases the design of the hull is controlled by use etc a narrow boat is going to have a flat or shallow v bottom to accommodate shallow draught a well designed yacht hull will be designed to give symmetrical wetted hull areas when heeled any deficiency in the performance of these common designs resulting from their limitations have to be accepted