Spearfishing kit - What and where? (part6 - Weight Belt)

As you have seen from previous posts, a spearfisherman carries a decent amount of equipment, from wet suit to fins, mask and snorkel. All these items displace water and therefore increase your buoyancy, this is counteracted by carrying weights.

There are two main different types of weighting methods. Firstly let's look at the traditional belt. Most spearfishing/freediving specific weight belts are made from rubber as most spearfisherman/freedivers spend allot of their time descending head first into the ocean, as depths increases so do pressures, with pressure your wet suit will compress as well as your body, this will leave a standard webbing weight belt loose compared to its initial fitting on the surface. With a rubber weight belt one can fit it with a slight bit of elasticity to compensate for the decreased body size at depth. The rubber weight belt can be used with conventional scuba diving lead weights.

Rubber Weight Belt

Conventional Diving Lead Weights

The one drawback of a weight belt is that the weight is centered around your waist while most of the bodies displacement is due to the torso. This brings us to the other weighting option, the harness. The weight harness fulfills the same purpose as the weight belt but enables a diver to distribute the weights so as to attain a certain buoyancy of certain areas of the body. One can also use wrist or ankle weights to further fine tune weight distribution.

Weight Harness

When deciding how much weight a person needs to take on a dive there are a few things to consider. The rule of thumb is 10% of your body weight but this changes depending on the depth you are planning on diving. Remember that you wet suit as well as your body compresses under pressure at depth, this results in less displacement of the body and therefore less buoyancy. You would therefore need less weight when diving deeper, exactly how much less would be a matter of individual trial and error. Another important thing to remember when donning your weights, be it a weight belt or harness, is how easy it is to release should you need to do so in an emergency. Weight belts do not have loops for securing the slack of your belt, this is so it is easily accessible so the belt can be release with just a tug of the belt. Most harnesses have equally easily operated safety releases, make sure they work smoothly before descending for your first dive.