We have just had an incident on a Rally we are at where a vans water heater caught fire, The water heater was situated under a seat and by the time the owner got to it it was well ablaze .Two fire extinguishers were employed on the fire, NEITHER WORKED, fortunately Camping Club rules state that Fire Buckets filled with water MUST be at each unit, these fire buckets saved the van from total destruction.I know that not all fires can be tackled with water but on this occasion they saved the van. So if you have an extinguisher in your van are you sure it will work when needed and will you always have a bucket filled with water at your unit? The damage estimate to the van is £2000. including cleaning of smoke damage, fortunately no one was injured in this incident.