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.
Home > Resource Center > Tips for Renters > What Does a Keel Do? The graceful, sweeping lines of a sailboat above the waterline belie the very hard-working and functional part of the boat below the water â the keel. The word keel, which has Norse and Dutch roots, refers to either a structural or hydrodynamic component of a vessel. The information below describes the basic functions of sailboat keels. To ensure that the keel works as intended and that the ballast is in good shape, the condition of the keel should be checked regularly, either during a haul-out or in-water.