Spaw, you LOVE to disagree;-) Road tankers in England are generally smaller than those over here maximum size allowed on the roads then was 5000 gallons. And tankers have gotten larger over the years. Some of the water tanks were very small, about 800 gallons. They were about 3'-6" high. (multiply by 5/4 to get US gallons). Then they were split into compartments inside, some not more that 2 feet wide.

There's kindof a trick to getting through the small manholes. You put one arm in, then your head then you slide your other shoulder through.

Bert.