Based on the latest information available, the boat ramp named Sommerfeld Drive 1823 is located in Waco, Texas, at latitude 31.54973793 and longitude -96.96407318. It is a public boat ramp that provides access to Lake Waco, a reservoir located on the Bosque River.

The ramp is reported to be approximately 15 feet wide, which should be sufficient for most small to medium-sized watercraft. It also includes a dock area for loading and unloading boats. However, it's important to note that the width of the ramp and any associated facilities may be subject to change over time, so it's always a good idea to verify the latest information before planning a trip.

As for what kind of craft are permitted on the water, Lake Waco is open to a variety of watercraft, including powerboats, sailboats, canoes, kayaks, and other types of paddlecraft. However, there may be restrictions on the use of certain types of watercraft, such as jet skis or personal watercraft, so it's important to check with local authorities or the managing agency for Lake Waco to verify any specific regulations.

In summary, Sommerfeld Drive 1823 boat ramp provides public access to Lake Waco, a popular destination for boating, fishing, and other water-based activities. The ramp is approximately 15 feet wide and can accommodate a variety of watercraft, depending on any applicable regulations or restrictions.