Basics of BCDs
BCDs, or Buoyancy Compensator Devices, are an essential piece of kit for your scuba adventures. The modern design has been reworked over decades, but the principles remain the same: allow air to enter a bladder to control your buoyancy. In addition to controlling buoyancy, BCD’s offer an attachment point for your tanks, weights to get you down, and several pockets and clips for carrying extra gear underwater. Let’s check out the key features for new BCD buyers…
Jacket or Wing Style
The modern BCD comes in these two styles, and they offer different feelings in regards to comfort and trim. Most students are trained in a jacket style, one where the bladder extends to the sides to sort of hug the diver. These are great for students who spend much time of the surface because they’re generally easier to stay upright in. The wing style is just the opposite: the bladder stays on your back on either side of your tank, creating a sort of wing shape. These are generally more streamlined and may make you feel less encumbered. Additionally, you may find a bit more mobility in your shoulder areas.
Pockets
Most BCDs nowadays have pockets on each side, but some (mainly wing style or travel BCDs) don’t have pockets. They may have D-rings or webbings for you to carry extra gear down with you. Remember, pockets aren’t necessarily essential; there is almost no piece of equipment you couldn’t rig to a D-ring
Weights
Arguably the most important component of your BCD is the integrated weights. These are much more comfortable and safer than weight belts, and allow you to adjust your trim to your liking. Weight pockets differ from brand to brand, so try out a few and discover which release system you prefer and whether non-dumpable weight pouches (generally found on the tank band)
