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The snap load alleviator (SLA) is a passive, hydraulic, shock-absorbing backup system to mitigate snap loads in a launch and recovery system for a manned submersible. The SLA is part of a mitigation strategy for potential failures identified as part of a hazard analysis. This analysis considered failures in the active heave compensation system, which is the primary approach to compensate for vessel heave in rough seas. To reduce the size and weight of the SLA, it has been designed with a muchdoi:10.1109/oceans.2007.4449301 fatcat:67s3fp2uovddxjvevbzgapuwny