OCS is using the A-frame mainly for jetting operation even the A-frame can be used for other activity. The main part of the whole A-frame spread can be into 3 parts. There are the A-frame, base frame and also hydraulic jack. During operation, the A-frame will be attached to the side of the barge either port side or starboard side depends on the barge’s deck space.

The A-frame basically uses to hold the jet sled in a fix position for the jetting operation. The A-frame has a weight of 5MT and it has a lifting capacity of 25MT. The maxium lifting radius/distance of the A-frame is 4.386m which is 65 from the bottom hinge location. The A-frame has a height of 11.56m and a length of 4.584m.