Marine accident investigation and maritime crime investigation using ships have no choice but to rely on statements from witnesses or accident officials because there is no recorded objective evidence such as CCTVs or black boxes. Therefore, there should be evidence to support the statements of witnesses or accident officials, such as navigation records, ship logs, communication details, and VDRs in which conversations between crew members in the steering room are recorded, and a system to accurately analyze and reproduce such evidence is needed. There are electronic video screening systems and ship control simulation systems to analyze accident investigation and navigation information when marine accidents such as collision, fire, sinking, and grounding during ship operation, and Korea Coast Guard use the ship collision reproduction system developed through the National R&D project. This paper studied in-depth the analysis technique for submitting it as legal evidence, focusing on the precedent of special coercion case adopted as evidence by using the ship collision reproduction system, which was mainly used for marine accident investigation such as ship collision after introduction by Korea Coast Guard. In order to increase the accuracy of navigation analysis and utilization of Korea Coast Guard investigations for various and complex ship accidents and ship crimes in the future, additional studies on the operation and navigation characteristics of the most common occurrence fishing boats are needed.