Anchor Handling Studies

We provide our clients with location specific vessel studies, focusing on obtaining actual dynamic forces on the vessel to evaluate and determine the vessel positioning capability during anchor deployment and recovery.

Triton can provide a range of vessel studies, the results of which assist our clients in selecting the correct specification of vessel.

During the study, the following points are considered:

  • Environmental factors including wind, wave and sea current strength and direction
  • Effects of mooring line configuration
  • Vessel heading, bearing and distance from the rig during mooring line installation
  • Dynamic loads on the mooring equipment from sea currents

We can carry out vessel specific vector utilisation plots to illustrate the positioning capability of any given vessel, taking into consideration the most critical environmental conditions. Triton uses a tested modeller to simulate the anchor handling vessels state in static analysis.

This is extremely useful for chartering specific vessels, highlighting their limitations and specifications prior to offshore operations commencing.

Deployment and Recovery Methodology for Moorings

Triton produce deep water mooring procedures, defining the methodology and drawings required, to ensure shared loads are defined, providing the minimum vessel specification in terms of winch capacities and bollard pull, together with recommended work-wire and chasing wire components. Due to the loading characteristics of deep water mooring systems placed on the vessel, having the correct methodology is critical for deep water mooring projects, in order to ensure a suitable strategy that minimises the loads imposed upon anchor handling vessels.

Catenary Profiling and Selection

Triton naval architects provide detailed catenary profiles for individual line or combined component of moorings through various stages of the mooring deployment operation. These determine catenary clearances over sub-sea assets and anticipated loads expected on the AHT`s winch and rig winch. Bollard pull analysis can be included as part of this service.

Heading Control Studies 

Heading control projects require the following documentation to be sure such operations are carried out in the correct manner – Bollard pull analysis, heading control calculations, heading control procedures.