Molodensky
This transformation is the DMA (US Defense Mapping Agency [now known as NIMA]) implementation of the Molodensky transformation. (The formulas used were extracted from Defense Mapping Agency Technical Report 8350.2-B, 1 December 1987.) Effectively, it is a variation of the Three Parameter Transformation that produces very similar results and can be calculated without iteration. Most importantly, the parameter use for this transformation is the same as the Three Parameter Transformation.