ALE has performed its heaviest-ever load-out operation by hydraulic skidding when performing the back skidding and load-out of an Appomattox hull, weighing over 40,440t, in South Korea.
ALE was contracted to undertake the weighing and skidding integration as well as the load-out and ballasting scopes.
In the summer of 2016 ALE performed the skidding of the half hull, from water-side further on the quay, using 48 skid shoes. This was undertaken so space could be created for the client to complete the hull using sheerlegs.
A few days prior for the load-out, ALE performed the weighing using a 112 point weighing system comprising of hydraulic jacks and load cells.
To perform the load-out, ALE installed 96 skid shoes under the hull, including 48 of ALE’s new 800t skids shoes. The skid shoes were divided over eight tracks and moved forward using 32 push pulls. The skidding was controlled using the new ALE computerised skidding system.
The ballasting and real-time barge monitoring was undertaken by ALE-Offshore Services, a specialist offshore division. The ballasting was undertaken using ten 24PS pumps and 47 10PS de-ballast pumps, with a combined capacity of 71,000t/ hr.
The load-out represents one of the largest ALE has executed to date. The actual load-out took 19 hours and the entire operation was completed in five weeks.