Block and Tackle
C-Tecnics Diver Recovery Block and Tackle Pulley System
The C-Tecnics Diver Recovery Block and Tackle is used in the recovery of a diver into the diving bell. It is a 6:1 advantage pulley system with an extended length of 5.5m – this is the estimated length from the top of the inside of the bell, through the bell trunking, to the base of the stage. Please check that this is the length required for your system – tailored lengths are available upon request.
Safe Working Load (SWL) – 480 K gs
Breaking Load – 1,350 K gs
The block and tackle needs to be attached to a secure lifting point which should be certified for at least 900Kg – a fully dressed diver can be estimated at 140Kg and this offers a 6x safety factor which is compatible with the load testing requirements of certain diver recovery harnesses such at the C-Tecnics JOK II harness.
The top pulley is fitted with a cam cleat which enables the rope to be ‘locked off’ each time it is pulled for recovery, thus permittng single-handed operation. The angle of the cleat is adjustable via ratcheted locking pin system, and this should be adjusted prior to use to suit the angle of use by the operator in the bell to make sure that it is in the optimum position. The bottom pulley has a stainless steel snap hook to permit clipping on to the lifting/recovery point on the diver’s harness.
The pulley system is supplied with a ”quick-deploy” storage bag and stainless steel spreader bar.