After conducting research, I cannot find any information about a boat ramp named Old Samson Road 118 in Elba, Alabama. It is possible that this boat ramp no longer exists or has been renamed. Additionally, there are several boat ramps in the Elba area, but without a specific address or more information, it is difficult to determine which one might be the correct location.

However, in general, boat ramps are typically designed for small to medium-sized boats and can vary in width. The body of water a boat ramp services can also vary, but is typically a nearby lake, river, or ocean. The type of watercraft permitted on the water may depend on local regulations and can include boats, canoes, kayaks, and other similar vessels.