Implementation of applied numerical experiments either in design phase, or in development and
creation of software suites demands unique synthesis of numerical structures that describe physical
phenomena to closely meet requirements of efficient application of simulation operations in the
context of continuous graphical visualisation of all spatial processes. Requirements for declarative
digital specification of ship hull geometry, contour lines of which are defined by continuous but
multilvalued functions, are formulated in the context of a particular engineering problem. Key
numerical operations define the hull motions in three-dimensional space under the impact of intense
sea waves, simulated in the framework of trochoidal theory of group structure of wind waves and
swell. Hydrometeorological parameters of sea state and ship dynamics, which are regularly
documented in ship bridge in accordance with the standard instructions to seafarers, are used as initial
conditions for setup and subsequent validation of direct numerical experiments.