Some self-inflators are accepted - others aren't. It's quite confusing.
Some self-inflators are inherently buoyant (they float without inflating)
https://www.dco.uscg.mil/CG-ENG-4/PFDSel/
TYPE I PFDS / OFF-SHORE LIFE JACKETS: Best for all waters, open ocean, rough seas, or remote water, where rescue may be slow coming. Abandon-ship lifejacket for commercial vessels and all vessels carrying passengers for hire:
- Inherently Buoyant Type I PFDs - SOLAS Service
- Inherently Buoyant Type I PFDs - U.S. Service
- Inflatable Type I PFDs - SOLAS and Domestic
- Hybrid Type I PFDs - US Services
TYPE II PFDS / NEAR-SHORE BUOYANT VESTS: For general boating activities. Good for calm, inland waters, or where there is a good chance for fast rescue.
:
- Inherently Buoyant Type II PFDs
- Inflatable Type II PFDs
- Hybrid Type II PFDs
TYPE III PFDS / FLOTATION AIDS: For general boating or the specialized activity that is marked on the device such as water skiing, hunting, fishing, canoeing, kayaking and others. Good for calm, inland waters, or where there is a good chance for fast rescue. Designed so that wearing it will complement your boating activities:
- Inherently Buoyant Type III PFDs
- Inflatable Type III PFDs
- Hybrid Type III PFDs
TYPE V PFDS / SPECIAL USE DEVICES: Only for special uses or conditions.
See label for limits of use:
- Hybrid Inflatable PFDs
- Canoe/Kayak Vest
- Boardsailing Vests
- Deck Suits
- Work Vests for Commercial Vessels
- Commercial Whitewater Vests
- Man-Overboard Rescue Devices
- Law Enforcement Flotation Devices
Note: The Coast Guard is working with the PFD community to revise the classification and labeling of PFDs. When completed, this information will be updated and hopefully be somewhat easier to understand. Meanwhile, spending a few minutes to understand the many options available to find a PFD that you’re willing to wear could mean the difference between life and death for you or a loved one.