Based on your selection for the overall length for OCV designs typical beam is automatically pre-chosen. This beam can be adapted within a range of ± 3m.
The Vessel Response Tool (VRT) is designed for supporting decision-making processes where a quick analysis of motion response behavior of different ship designs for benchmarking or vessel selection is needed. The tool enables the user to evaluate and compare mission dependent ship motion behavior based on the vessel's main characteristics, motion limitations, and environmental data only. The tool delivers a validated1 approximation of selected performance parameters, such as limiting sea states, percentage operability, and the Operability Robustness Index (ORI).
Based on your selection for the overall length for OCV designs typical beam is automatically pre-chosen. This beam can be adapted within a range of ± 3m.
Draught of 7m. is pre-selected and can be adapted in a range between 5 and 9m.
Transverse metacentric height of 2.5m is pre-selected and can be adapted between 1 and 5m.
A wave heading angle of 0º corresponds to head seas, 90º to beam seas, and 180º to following seas.
Long-crested sea spectrum.
Fwd. AP
Example: x=0.5 -> overall length/2 fwd. AP
Off centreline (positive to starboard side)
Example: y=0.5 -> vessel side
Above baseline
1 The analysis is based on a large database of transfer functions, calculated for a generic hull of a modern offshore construction vessel. A comparison of a variation of hull geometries leads to an accuracy level (standard deviation) for the ORI (formerly nominated IOF) of 7.7% for roll, 3.3% for pitch and 1.8% for heave at COG. For further information please refer to the OMAE2017-62307 proceeding 'Design Parameters for Increased Operability of Offshore Crane Vessels'.