Br 3021 Standard Pdf -

It specifies shock levels based on the equipment's mass and its location on the ship (e.g., items below the waterline face more severe requirements). 2. Core Classifications (Shock Grade 'A')

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For equipment fitted above the waterline . Requirements are lower, typically around ) vertically and ) laterally. Usage in Documentation Naval Shock Testing Guidelines | PDF - Scribd It specifies shock levels based on the equipment's