本指南包含造船工业中用于临时保护钢铁的车间预涂底漆的类型、应用和材料特性的信息。有时，在涂敷一次涂层系统之前必须清除这些底漆，但在许多情况下，如果在涂敷最终涂层系统之前对施工前底漆进行二次表面处理（可能涉及电动工具清理、刷除喷砂、加压水清洗或这些方法的组合），则不需要完全清除。

The Guide contains information about the types, application, and material properties of shop-applied pre-construction primer coatings used in the shipbuilding industry to temporarily protect steel during the shipbuilding process. Sometimes these primers must be removed prior to applying the primary coating system, but in many instances complete removal is not necessary if a secondary surface preparation of the pre-construction primer (which may involve power tool cleaning, brush-off blasting, pressurized water cleaning, or a combination of these methods) is performed prior to application of the final coating system.