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.
â¢ Why do shiphandling tugs have narrow wheelhouses and hinged masts? â¢ Name two of the most important towing requirements for tugs? â¢ What is a kort nozzle and what is its purpose? â¢ What are flanking rudders and what is their purpose? â¢ Why do most tugs have stern control stations? â¢ What are the dangers in shifting from the wheelhouse controls to the stern station? â¢ Why are many tugs built with tumble home bulwarks? â¢ Why is a large bow fender important in ship handling work?