REMBRANDT DMA computes the motions of a multi-body system in response to winds, waves and currents. It also accounts for the (frequency dependent) hydrodynamic interactions between adjacent ships.
REMBRANDT DMA can be used to analyse the motions of a side-by-side moored LNGC and FSRU for turret moored weathervaning systems, spread moored systems and FSRU’s moored at a jetty. Typical results are:
- Maximum loading arm excursions;
- Maximum accelerations, roll angle and pitch angle of critical points on the FSRU;
- Maximum forces in the mooring system.
A critical aspect affecting the reliability of the results is the fidelity with which the metocean conditions are represented. For example, if there are cross seas or large differences in wave and current direction, the FSRU and LNGC may be subjected to beam waves. In general, these have a much worse effect on the availability than head waves. The strong point of BMT’s approach is the availability of all aspects (coastal metocean conditions, ship hydrodynamics and ship response) that determine the outcome.