The nation’s largest credit union is a relatively small player in business lending, but a vender announcement Wednesday signaled Navy Federal Credit Union has aspirations to expand its portfolio, focusing on small businesses. Navy FCU ($83.7 billion in assets, 7.4 million members) said it will use the bank operating system of nCino, a cloud banking software developer based in Wilmington, N.C. Chicago-based West Monroe Partners is expected to complete the installation of the nCino software in April. Dave Ledwell, Navy FCU’s senior vice president for consumer and business lending, said he expects the system will both increase ease of use and speed applications for members, while cutting overall processing costs. NCUA data shows Navy FCU’s Member Business Loans grew 14% to $315.8 million as of Sept. 30 and represented just 0.5% of its total loans. Among all federally insured credit unions, MBLs grew 8% to $62.3 billion, and accounted for 6.6% of loans.