Must be maintained in a fully charged usable condition.
The US Coast Guard regulations for fire extinguishers on boats under their jurisdiction, or other jurisdictions that have adopted USCG standards, can be found at 46 CFR 25.30 in the Code of Federal Regulations.
A summary is found on the related questions.
Must be maintained and fully charged at all times.
Must be coast guard approved
Must be Coast Guard approved
Must be Coast Guard approved
Must be maintained in a fully charged usable condition.
Must be maintained in a fully charged usable condition
Must be maintained in a fully charged usable condition
Must be coast guard approved
Must be Coast Guard approved
Must be maintained in a fully charged usable condition.
must be fully charged at all times
Yes, if the boat is under coast guard jurisdiction, or some other place that has adopted coast-guard regulations for fire extinguishers, then any REQUIRED fire extinguisher aboard must be coast-guard approved and labelled accordingly.
Must be coast guard approved