Based on the workshop on-site visualization platform, the application of Detailed Assembly Planning (DAP) technology for the whole outfitting visualization virtual assembly towards the production workshop is realized through formulating the assembly coding rules, converting to the lightweight assembly model, integrating the model with the drawing and document information, and setting the assembly information release rules. A typical block of a Very Large Crude Carrier (VLCC) is taken as the example application object. Through the example, the effectiveness and advanced nature of DAP technology for the whole outfitting visualization virtual assembly are verified, which can lay a foundation for the further research of ship intelligent manufacturing.