The modern Maritime Acquisition Publication that provides updated guidance on naval shock requirements.
The equivalent US military standard for high-impact shock testing. br 3021 standard pdf
An Indian Joint Services Specification often used in conjunction with BR 3021 for electronic and electrical equipment. 11 ms 22g
BR 3021 categorizes equipment based on its location within the vessel, as different areas experience varying shock intensities: Shock Grade Application Area Vertical Severity Lateral Severity Below the waterline (Hull-mounted) 120g, 8 ms NSS Grade II Above the waterline (Deck/Bulkhead) 50g, 11 ms 22g, 11 ms br 3021 standard pdf