A boats deadrise is defined by the angle formed between between the horizontal plane and the vessels hull. This is usually given by most manufacturers as an angle at the transom. To give you an example of this is shown in the transom section in the images below.
The angle is seen as essentially how much of a vee shape the hull makes. It is a shape that is most carefully engineered to achieve a certain result. Therefore this should be important to you, if you are after a vessel that can handle rough water, or shallow water. Whether you’re looking for overall smooth ride or high performance.
At CNC Marine
At CNC Marine most of our vessels use a variable deadrise which starts at about 15 degrees at the transom but aggressively increases towards the bow. We’ve spent a large amount of time and used leading edge naval architecture software to come up with a hull that meets our stringent requirements. We aimed to achieve a fine waterline entry while retaining stability and efficiency. We did this while also creating a structure that is easy to put together and does not require any jigs.