Why do Australians call horse trailers floats?

The term "float" is used in Australia to refer to a horse trailer because it is a flatbed trailer that floats on the water when traveling through flooded areas. These trailers are typically made of aluminum or steel and have a waterproof design, allowing them to safely transport horses across water. The buoyancy of the trailer helps to keep it afloat, even when fully loaded with horses and gear.

In Australia, where flooding can occur frequently, horse floats are essential for transporting horses safely and efficiently. They provide a reliable way for horse owners to move their animals to different locations, regardless of the weather conditions.

The use of the term "float" in this context is unique to Australia and reflects the country's specific terrain and climate challenges.