What regulation requires that safety equipment be carried on board at all times?

The regulation requiring that safety equipment be carried on board at all times varies by jurisdiction, but in the United States, the Coast Guard mandates this under the Code of Federal Regulations (CFR) Title 33 and Title 46. These regulations stipulate that vessels must carry specific safety equipment, such as life jackets, fire extinguishers, and signaling devices, depending on their size and type. Compliance ensures the safety of all passengers and crew while at sea.