Intership prepared a bid for Petrobras, to provide their large accommodation barge Camelot, with a dynamic gangway to a SWATH transfer vessel.

Longitude was instructed to prepare a multi-body motions analysis of a small waterplane area twin hull (SWATH) crew transfer boat alongside a 190 metre long accommodation vessel. The purpose of the analysis was to determine the maximum sea states in which a dynamic gangway could operate.  Longitude prepared hydrodynamic models of the two vessels, calibrated against partial data provided and then undertook time domain motions analyses to determine the relative motions at the gangway positions.