Abstract: A method, computer program and equipment for controlling a crane and method for updating a crane. A crane is controlled or the crane is updated to be controlled by: a) forming video image at a lifting point of a crane; b) determining a current and a future position of a lifting member or of a load with respect to the formed video image; c) combining to the formed video image an indication of the future position of the lifting member or of the load; and d) performing repeatedly again steps b) and c) for real time indicating of the future position of the lifting member or of the load.

Abstract: A lifting hook includes a hook body with a hook stem and a hook tip; a safety latch with a fastening end and a free latch end, the fastening end of the safety latch being pivotally fastened close to the stem so as to be moved between an open position and a closed position, the safety latch being in its open position substantially against the inside of the hook body in a position that leaves a hook jaw free while in the closed position the latch end extends across the hook jaw to the hook tip, closing the jaw on the inside thereof; and an actuator for actuating the safety latch, the actuator including a spring arranged between the safety latch and the hook body and forcing the latch end into the closed position, a locking pawl structure and a cam surface arrangement for locking the safety latch into the open position, and a release extending across the jaw for releasing the safety latch from the open position. A safety latch for a lifting hook is also disclosed.

Abstract: A lifting hook includes a hook body with a hook stem and a hook tip; a safety latch with a fastening end and a free latch end, the fastening end of the safety latch being pivotally fastened close to the stem so as to be moved between an open position and a closed position, the safety latch being in its open position substantially against the inside of the hook body in a position that leaves a hook jaw free while in the closed position the latch end extends across the hook jaw to the hook tip, closing the jaw on the inside thereof; and an actuator for actuating the safety latch, the actuator including a spring arranged between the safety latch and the hook body and forcing the latch end into the closed position, a locking pawl structure and a cam surface arrangement for locking the safety latch into the open position, and a release extending across the jaw for releasing the safety latch from the open position. A safety latch for a lifting hook is also disclosed.