LUFFING CRANE Definition A crane in which, during any alteration of radius, an automatic device causes the load to move horizontally. Mahmoud Y.Ismail. 26 - 01- 2008. England UK.
When you're on a sail boat and steer it closer to the wind, this is called luffing. Also, when you raise or lower the boom on a derrick or crane, this is also called luffing.
A jib is the forward most triangular sail on a ship. Luffing is a nautical term for when the sail flutters because it is pointed straight into the wind instead of catching it. A luffing jib also refers to a type of crane that is used in tight areas, usually in urban environments. This crane can operate so that its boom is able to be maneuvered in smaller areas so that neighboring property owners do not need to be contacted for permission to operate.
I think it is turning the boom down wind when a storm is expected. Ask again if I am wrong.I think it is derived from a sailing term.
A crane is a first class lever when it is winching in or out the rope attached to a load. The crane becomes 3rd class lever when it's boom is luffing, i.e. it is being lowererd or raised.
The largest crane are actually two cranes, each with a lifting capacity of 7100 tonnes. There a positioned on the semi-submersible crane vessel (SSCV) Thialf owned by Heerema Marine Contractors B.V. The two cranes have a combined lifting capacity of 14200. The Thialf had the world record for heaviest lift being Shell's Shearwater project of 11883 tonnes, which is now the second best.
I believe that you are describing 'luffing'; to flap while losing wind.
Derrick crane, derrick, hoist, Scotch crane, jib crane
The address of the Crane County Library is: 701 S Alford St, Crane, 79731 2521
Eleanor crane , Annabel crane and Elizabeth crane
crane. That's all. It's called a crane.
Gregory Crane has written: 'Gregory Crane'
EOT Crane means Electric overhead traveling crane. I work for IMT the crane manufacturers.