Van Mai Linh developed the core gameplay and documentation for the d23-java/seabattle repository, delivering a fully functional two-player Sea Battle game with dynamic board sizing and robust end-of-game handling. Using Java and object-oriented design principles, Van refactored the architecture to support extensibility and maintainability, enabling future feature iterations. The work included comprehensive documentation and UML diagrams, improving onboarding and collaboration for new contributors. Git was used for version control and repository organization, with updates to the README and .gitignore for IDE hygiene. The focus on solid foundations and clear documentation resulted in a maintainable codebase with no critical bugs reported.