That's exactly what they were used for.
What I'm after is what the originals were used for and where. Bragging rights if you can name the museum
Stewie got the what and where: Launching and recovering the Dungeness Lifeboat but Shoot999 gets bragging rights for landing in Chatham.
They are in the RNLI Historic Lifeboat Collection within The Historic Dockyard, Chatham. They're called "Back Stays" and were used by the female launchers of the Dungeness lifeboat to stop them sinking into the shingle. The "design", if you can call it that, originates from the 18thC and were used to walk across shingle. Their use died out when tractor launching was introduced and also when in 1936 a concrete road was laid out towards Dungeness point.
Over to you Stewie.