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This briefing describes an effort to implement advanced Shipboard Ballistic Missile Defense (SBMD) application algorithms utilizing HPEC-SI. Shipboard application code, previously written in the C programming language for conventional COTS PowerPC-based embedded architectures, is being converted by Lockheed Martin MS2, as an HPEC-SI Demonstration, to run under the HPEC-SI API. The C code, designed to run in a C environment, will be converted to the HPEC-SI API standard to run under a true C++ Object Oriented environment, and will eventually take advantage of the HPEC-SI parallel processing features. Of particular interest in this conversion is a comparison of key DoD processing algorithms executed on a conventional, embedded processing architecture using C and C application libraries, as compared with execution in an embedded HPEC-SI processing environment. In this briefing, we describe the porting of several of the signal processing algorithms that have been developed using C-based VSIPL, and port them to the HPEC-SI VSIPL++ API under development. As part of this process, the HPEC-SI community will receive valuable feedback regarding the HPEC-SI API implementation, including the development process, development metrics, development environment issues and key library functions. Eventually, the open architecture HPEC-SI VSIPL++ code developed for the Navy and MDA will be ported to a tactical system for deployment on Aegis cruisers and destroyers.