👉 Seaboard is a type of land-based racing surface for boats, typically used for speedboat racing. It is often referred to as a "seaweed" surface due to its resemblance to seaweed. Seabords are typically flat or slightly inclined surfaces that provide a stable and smooth surface for the boats to race on. They are also known for their ability to absorb vibrations during races, making them ideal for long-distance racing.