However, there are less obvious benefits coupled to reducing a boat’s weight. If a boat can be made lighter, and thus more efficient, it requires smaller engines to achieve the designed speed and can also utilize smaller fuel tanks without compromising range. Now you pick up space in the boat, enabling better serviceability and easier installation of accessories such as air-conditioners and gensets, or the aft cabin can be made that much wider. On the face of it, it might not seem like much, but when a berth goes from 48 inches wide to 54 inches wide, or the clearance around a filter or fitting goes from two inches to four inches, it makes a difference. If you’ve slept aboard or performed your own service, you know this is true.