Ever watched a diver struggle to keep their head above water while their buddy floats effortlessly beside them in identical conditions? The difference often comes down to one of the most overlooked safety factors in scuba equipment: BCD lift capacity. In this episode, Ray Hollister draws on four decades of diving and gear testing experience to break down exactly how much lift you actually need, why manufacturer ratings don't tell the whole story, and how to avoid becoming that diver white-knuckling the inflator button in rough surface conditions.

• Most recreational divers need 25–40 pounds of lift for tropical diving and 35–55 pounds for cold water with drysuits—those ultralight travel BCDs with 18–22 pounds of lift are borderline dangerous for anyone wearing more than a 3mm wetsuit with an aluminum 80 tank.

• Lift  ...