Blend (B) releases oil through, when the circuit supply of the crane is interrupted and allows thereby automatic the boom of the crane to place itself in the direction of the wind.

The apparatus utilizes a support means (56) attached to the crane boom substantially at the connection point of an existing upper tackle.

Secondly, simple registration of the running engine would not provide enough analysis data on the use and movements of the crane mast.

Neither the skipper nor the deck-hand looked at the inclinometer on the crane's boom, nor did they inquire about the height of the boom's head.

A Global Navigation Satellite System (GNSS) receiver antenna (238) is disposed on a point along a boom assembly of the crane (201), the crane configured to pivot about a pivot point (220).

(3) Any modifications or repairs to the boom of the crane shall be made in accordance with the instructions of the crane manufacturer or a professional engineer.

The crane has a winch (35) and an associated hoisting cable (36) for hoisting a load.

The assembly is intended to be mounted on the boom or jib of the crane and includes a gripper (10; 76) for gripping around a tree trunk during a tree felling, delimbing and loading operation.

(vi) is suspended from, or supported by, a direct attachment to the boom of the crane,

(b) the boom of the crane cannot affect or be affected by the operation of another crane or make contact with a structure or equipment;

The end of a crane boom on the barge T.L. Sharpe hit the span of the Knight Street Bridge.

The crane boom and the cinematographic or television shooting instruments are gyroscopically stabilised and their movement as well as the load they apply on a support are not submitted to the vibrations of the latter.