After conducting research, I was unable to find any information on a boat ramp called Riviera Drive 54 in Pennsville, Delaware. It is possible that the name of the boat ramp is different or that it does not exist.

Therefore, I cannot provide any details on the kind of boat ramp it is, how wide it is, what body of water it services, or what kind of craft are permitted on the water. I apologize for any inconvenience and encourage further research or reaching out to local authorities for more information.