Are fishing vessels that catch, head and eviscerate, and then hold fish in cold storage until it can be off-loaded for delivery to a processor required to register?

Under 21 CFR 1.226(f), fishing vessels are exempt from registration unless processing is done on
board the ship. “Processing,” relating to fish and fishery products, means, “Handling, storing,
preparing, heading, eviscerating, shucking, freezing, changing into different market forms,
manufacturing, preserving, packing, labeling, dockside unloading, or holding.” However, a
fishing vessel that “engages in harvesting or transporting fish or fishery products, without
otherwise engaging in processing, or that engages in practices such as heading, eviscerating, or
freezing, intended solely to prepare a fish for holding on board a harvest vessel,” is exempt from
registration (21 CFR 1.226(f)).