From my experience (watched blimps land at a local airport a few times as a kid) they don’t really land so much as hover near the ground. When they get close enough to the ground, there are mooring lines that come off the front of the blimp. The ground crew will grab them as the blimp drifts slowly in, and tie the blimp down, which is kinda like catching the blimp. IDK if the OP was referring to something different though. I’ve only seen Goodyear blimps.
From my experience (watched blimps land at a local airport a few times as a kid) they don’t really land so much as hover near the ground. When they get close enough to the ground, there are mooring lines that come off the front of the blimp. The ground crew will grab them as the blimp drifts slowly in, and tie the blimp down, which is kinda like catching the blimp. IDK if the OP was referring to something different though. I’ve only seen Goodyear blimps.