Cable Lay Vessel Analysis


Mid-Ship analysis to assess and validate increased deck and tank-top loadings under Operational and Extreme sea states.

Why


MAATS supplied NKT with the carousels and lay equipment for the NKT Victoria cable lay vessel. MAATS had constructed and utilised a global FEA model of the carousels coupled with the mid-ship structure. Our Engineers worked closely with the ship designers to achieve a detailed representation of the vessel, drawing on our expertise in Naval Architecture. The analyses were completed in accordance with DNV GL Rules for Ships and classification approval was subsequently achieved with the society.

Following completion of the vessel and several successful cable lay campaigns, NKT asked MAATS to assess an increased capacity for their carousels to meet market demand.

The assessment required a re-analysis of the carousels and the mid- ship structures. The objective of was to achieve approval from DNV GL, for an increased cable capacity of in excess of 1000 tonnes.

The project required full consideration of the vessel and carousel integrity, for loads and conditions that they were not initially designed for.

How


Our FEA engineers constructed a global model of the vessel and the carousels, using the clients ship and carousel drawings. The model was then loaded and constrained in accordance with DNV GL Rules for Classification of Ships and with following were included:

  • Operational and Transit Vessel Motions
  • Static plus wave bending moments and shear forces
  • Hogging and sagging conditions
  • Corrosion allowance
  • Tank and Cargo Loads
  • Heeled Conditions
  • Environmental loads such as wind.