There is two van parks in Huskisson, one called white sands and the other I think but could be wrong huskisson vp. They both have water frontage to Jarvis bay and are nice van parks. I believe they are both councIll owned and run. I dont know about access for a 25 ft van though. J B is very scenic and has great access to dolphin and whale watching cruises and very popular with scuba diving.
