Case in point is the Dyer Dhow. The Dhow is a dinghy--designed by Philip C Rhodes and Charles Wittholz, and built by The Anchorage in Warren, Rhode Island since 1948, the Dhow is the longest continuously produced fiberglass boat—that can be motored, rowed or sailed. One can order a Dhow with a translucent bottom, made possible by the use of clear gelcoat. So molded, the Dhow allows light to pass through when it is stowed inverted over a deck hatch, on the deck of a cruising sailboat. So if you come across one for sale, don't think for a moment that the previous owner sanded the bottom too aggressively, as did one misinformed yard sale denizen I happened to overhear. Its supposed to be opaque, to allow in light light to the cabin when stowed, not to provide a viewing pane like a glass-bottom boat.
Another example is the Texas Scooter, such as those built by Boat Right Marine. Designed to run expansive flats, such as those found at Lower Laguna Madre, scooters may be the only powerboat type in which the draft exceeds the freeboard. They are tunnel hulled, outboard-powered and can damn near be run on damp sand. A scooter's most dramatic feature may be the flat deck, just inches above the water and around which there is usually no railing. This last facilitates the casting to, and the landing of, various Gulf of Mexico fish species. Obviously, a scooter is not a rough water boat, but for their intended use, in the environment for which they were developed, a scooter is tough to beat.