Duncan Shoemaker & Associates LLC

Duncan Shoemaker & Associates LLC (DSA) is a premier, privately held marine surveying and maritime consulting firm that operates around the clock to provide critical data and risk analysis. With decades of industry credibility, the firm has built a strong market presence by helping ship owners, insurers, and charterers navigate operational risks. In 2024, the company substantially scaled its geographic reach and capabilities by formally joining forces with Lone Star Maritime and the global DP Survey Group.