A Type 1 or 2 may be the greatest choice for both calm and turbulent glasses of water because they will most likely last long enough until help arrives. A Type 1 life jacket is buoyant by nature and is best used in open, distant, or choppy water where assistance may be delayed. Type 2 life jackets are less buoyant and more comfortable than Type 1 life jackets since they are intrinsically buoyant or inflated. When in a sheltered inland area when immediate rescue is likely, these are advised.