PIPELAYING VESSELS FOR SAPURA

Building integrated pipelaying vessels for Sapura Navegação Marítima (Sapura)

INNOVATIVE DESIGN CHANGES RESULT IN HIGHLY EFFICIENT VESSELS

Integrating all critical equipment in the concept design phase and applying small but clever innovations results in efficient, safe and maintenance-friendly pipelaying vessels.

The job at hand

Port restrictions

Designing and constructing five fully integrated 550t pipelaying vessels for Sapura with the capability to lay pipe at a depth of up to 2,500m. 

DESIGN INTEGRATION

To accommodate pipe loading over the stern without exceeding the maximum length of 146m, the chutes are integrated into the steel structure. Pipe is fed through a loading tensioner on deck and passes over intermediate guide chutes, before being loaded into one of the underdeck carousels.

EASILY ADJUSTIBLE

Depending on the diameter of the pipeline, different pads on the tensioners are required. With 350 pads per tensioner, this can be quite time consuming. IHC devised an innovative system with a single retainer – and pin to remove it – making it as quick and easy as possible.

HEIGHT LIMITATIONS

One of the design criteria for Sapura vessels is the minimum air draft of 48m, which is required in order to allow each vessel to pass under a bridge en route to the pipe loading location. To achieve this air draft specification, the A&R post, top aligner and tower top crane can be tilted to the correct position within minutes. 

LARGE FREE DECK SPACE

The vertical lay tower is positioned directly aft of the accommodation and over the moon pool. This arrangement allows for a large worktable to carry out activities on pipes and pipe ends, leaving an additional large free deck area.

SYSTEM INTEGRATION

Integration of platform and mission equipment has been achieved through the use of the Integrated Vessel Automation vessel management system. This integrates the vessel’s power management system (PMS), DP system and alarm monitoring system (AMS) with the control and monitoring logics of the main switchboards and VFDs, and communicates with the lay tower control system. 

UNIFORMITY

To limit the need for spare parts, and to maximise uptime, IHC has designed the 550t pipelaying vessels for Sapura with a uniformity of components in mind. And as the 550t vessels are identical, operational and technical crew members are able to work on all vessels without the need for additional training.

Making it a highly efficient pipelaying vessel

Results

Financial solutions 0 million realised by IHC
Pipelay Simulator 0 training scenario's
five vessels 0 Milestones exactly on time

OUR PEOPLE ON THE JOB