Aegir is a medium-fidelity potential flow code that uses a high-order, non-uniform rational B-Spline (NURBS) based boundary-element method for the computation of steady and unsteady ship hydrodynamics. This paper documents verification and validation for Aegir in its steady-state wave resistance prediction mode and Aegir’s LEAPS to Aegir function. A set of best practice guidelines has been created to aid the user in selecting initial input parameters, which reduces the necessary time for verification. This paper also presents validation of the numerical solution versus physical experiments from publically available ship data sets. Aegir has become more prevalent in the naval ship design community and is now a part of the US Navy’s Integrated Hydrodynamic Design Environment (IHDE).

The design and optimization of a ship’s structure depends on a prediction of lifetime extreme global loads. For novel hull forms, designers often rely on first-principle analysis and simulation methods for these predictions. Complicating this process is the fact that critical information about the ship, such as displacement and mass distribution, may be highly uncertain during early stage ship design. For this reason, efficient methods for uncertainty quantification of global structural loads are needed. This paper gives a preliminary comparison of two methods for this purpose polynomial chaos expansion, and multivariate splines. Preliminary results show favorable performance using multivariate splines. Interesting features of the design space are discussed, based on simulations using a scaled version of the Delft Catamaran 372 hull geometry.