Mooring mast

A mooring mast is like a big post that helps hold onto a very large balloon or airship. Imagine a tall pole with a collar at the top, like a necklace, where the airship rope can be tied up. The mooring mast is gas-tight so that helium gas can be pumped in and keep the airship hovering in one spot while it is tied up. Think of it like tying a dog to a post so it won't run away. The mooring mast was used a long time ago, back when airships were more popular, to help them stay in one place when they landed at airports or other places.