- Pipe Clamping Mattress (PCM)
- Subcon Scour Collar
- Articulated Concrete Mattresses
- Frond Mattress
- Anchors and Clump Weights
- Scour Skirts
- Subcon Standard Formwork
- Subcon Custom Formwork
- Offshore 2te Bulk Bags
- Offshore Bottom Opening Bags
- Flying Lead Stabilisation Bags
- 40kg Saddle Bags
- 20 & 25kg Sand/Cement/Mortar Bag
- Subsea Grouting Turntable
- SHR 350 Hose Reel
Rota Pipeline Crossing Sleepers
Petrobras contracted Allseas to perform the engineering design, supply of subsea equipment, construction and pre-commissioning of a 20’ -24’ gas pipeline connecting the Cernambi/Lula fields to Jacone beach.
The Rota 3 pipeline crosses the Rota 2 pipeline in a water depth of 1280m. The crossing was achieved using two concrete mattress towers, one placed on either side of the Rota 2 pipeline. During a survey during the dewatering stage showed that the Rota 3 pipeline had moved from the mattresses and was resting on the Rota 2 pipeline.
Allseas contracted Subcon to design and fabricate two sleepers to place as new supports on either side of the Rota 2 pipeline. Each sleeper had a dry weight of 110 tonnes and was fabricated on a quay side in Rio De Janeiro. Subcon was also responsible for the loadout of the sleepers onto Allseas’ vessel.