So, does size matter? In yachts it does, because it basically determines the classification of the vessel. You may know this already but this is a good primer for new yacht owners or those looking to purchase one.
These are very large vessel designed to navigate across oceans.
These yachts are designed to go "offshore," say out 200 miles, but they are not specifically designed to cross oceans.
These vessels are smaller and sailing around a port area or bay, within ease of re-docking, is their main purpose. These are fun vessels to take a day or early evening to be out on the water enjoying life!
These vessels are mainly for close to shore, in rivers or canals, and are not meant to go far from shore or to cross an ocean.