The 15th Street boat ramp is located on the Bolivar Peninsula in Texas, with its coordinates being 29.36961174 latitude and -94.75109863 longitude. This boat ramp is a concrete ramp that provides access to the Gulf of Mexico.

As for the width of the 15th Street boat ramp, the latest information available suggests that it is 12 feet wide, which is wide enough to accommodate a variety of watercraft types.

Regarding the body of water that the 15th Street boat ramp services, it provides access to the Gulf of Mexico, which is a large body of water connected to the Atlantic Ocean.

In terms of the types of craft permitted on the water, the latest information indicates that 15th Street boat ramp allows for a wide range of watercraft types, including powerboats, sailboats, kayaks, canoes, and paddleboards. However, it is recommended that boaters check with local authorities for any specific regulations or restrictions that may apply.

In summary, the 15th Street boat ramp is a concrete ramp located on the Bolivar Peninsula in Texas, providing access to the Gulf of Mexico. It is 12 feet wide and permits a variety of watercraft types to launch from the ramp.