Weights and belts

Weight belts or other weight systems help scuba divers maintain neutral buoyancy underwater. The amount of weight you need to achieve neutral buoyancy depends on several different factors. You cannot use a simple formula to calculate exactly how much weight you need, but you can take certain factors into consideration when estimating how much weight will be ideal.  A general rule of thumb states that you will need 8 to 10 percent of your body weight for saltwater dives, and 6 to 8 percent of your body weight for fresh water dives. Always refer back to your scuba training manual for specific buoyancy check guidelines.