During the design phase of shipbuilding and offshore engineering, the selection of materials is a decision that is critical to safety and has a direct impact on costs. Faced with the various high-strength grades within the ABS Grade Shipbuilding Steel Plate range - AH36, DH36 and EH36. Many engineers ask the same question: what exactly distinguishes them from one another? This article will provide a detailed analysis of how to correctly select the most suitable steel plate grade in accordance with ABS specifications, examining three key aspects: impact temperature, chemical composition and application scenarios.