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Four scuba divers drown in 'Blood Grotto' panic (Italy).

Four scuba divers drown in 'Blood Grotto' panic (Italy).

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  Four scuba divers drowned during a routine dive to a popular underwater cave system in southern Italy went horribly wrong over the weekend, according to the coast guard. The group of divers lost... Read more

Moorea - Tahiti Dive Sites

Moorea - Tahiti Dive Sites

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PAPETOAI POINTThe best spot for beginners and lessons in the lagoon. On a white sand valley, coral patches with a lot of small coloured fish are waiting for you. A little bit deeper, you will encount... Read more

Coral Reefs Video....

Coral Reefs Video...."Take Care of them"

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    Biological oceanographer Dr. Chris Langdon (University of Miami) tells us that about 25% of all fish life in the ocean spends some part of its life cycle in a coral reef. He belie... Read more

Why Scuba Diving in the Turks and Caicos?

Why Scuba Diving in the Turks and Caicos?

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If you are a scuba diver, there is a chance that you’ve heard of the Turks and Caicos Islands. This is a popular scuba diving location about 60 minutes away from Miami. In the next few lines, y... Read more

Scuba Diving with the Lionfish: A Great Catch!

Scuba Diving with the Lionfish: A Great Catch!

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The lionfish is one of the most beautiful creatures that divers can behold underwater. It is a fish characterized by spiky fins, and a color combination of striped red, yellow, brown, yellow, or blac... Read more

Want to go Scuba Diving in Barbados, the South East Caribbean?

Want to go Scuba Diving in Barbados, the South East Caribbean?

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The reefs and edges just off the coast of this small tropical Caribbean paradise are home to many different plant species, coral and sponge life. The sheer diversity of the reefs here is simply astou... Read more

Caribbean island of Dominica schedules Dive Festival for July

Caribbean island of Dominica schedules Dive Festival for July

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Officials from the Caribbean island of Dominica have announced that the 18th annual Dive Festival event will take place this July. The popular annual event provides scuba divers with option for a mid... Read more

Diving in Hawaii.  Why Maui Offers Divers Paradise

Diving in Hawaii. Why Maui Offers Divers Paradise

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Hawaii has to be one of the United States' most loved places for a holiday, and it’s unsurprising what with its gorgeous climate and paradise location. But for divers it offers something even m... Read more

Scuba Diving Beautiful Bonaire in the Caribbean...Made for Divers

Scuba Diving Beautiful Bonaire in the Caribbean...Made for Divers

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The Caribbean has many lures for tourists, one being its fantastic location as a scuba diving spot. However, if you’re a diving enthusiast and want to visit a retreat which seems to be wholly t... Read more

Our Fiji Dive Centers and Dive Resorts for our visit soon!!!

Our Fiji Dive Centers and Dive Resorts for our visit soon!!!

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A few of us here at TheScubaDivingDirectory.com are planning a trip to Fiji in the upcoming months to meet our Fiji Dive Centers and Dive Resorts and do some amazing diving. We love to visit our Dive... Read more

Scuba Diving Lombok and Gili Islands off Bali in Indonesia

Scuba Diving Lombok and Gili Islands off Bali in Indonesia

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Lombok is an island located east of Bali and accessible by air, fast boat or public ferry.The simple pleasure of sunshine, white sandy beaches in quieter settings than Bali, unique culture, stunning ... Read more

Scuba Diving in Thailand. The 5 Big Truths

Scuba Diving in Thailand. The 5 Big Truths

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No other country in the world could offer tourists such varied scuba diving sites like Thailand does. From beginners to seasoned divers, the islands of Thailand have so much to offer, with its amazin... Read more

Shark fishing banned in Mexican waters

Shark fishing banned in Mexican waters

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The National Commission of Aquaculture and Fisheries (Conapesca) decided to ban the fishing of all shark species in federal waters on both coasts in order to contribute to the conservation of the res... Read more

Scuba Diving with thescubadivingdirectory.com team in Honduras on the island of Roatan.

Scuba Diving with thescubadivingdirectory.com team in Honduras on the island of Roatan.

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We loved the only 2.5 hour direct flight from Houston to Central America and the  island of Roatan, and love the nice locals as well as all the xpats of Americans, English, Italians and even Sou... Read more

Top 5 Dive Sites in Dahab, Sinai Desert, the Red Sea

Top 5 Dive Sites in Dahab, Sinai Desert, the Red Sea

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Located in Egypt’s Sinai region, Dahab has become a huge attraction for divers. North of Sharm el Sheikh’s popular holiday and dive resorts, the little town of Dahab has everything an und... Read more

Shopping and choosing a Dive Computer

Shopping and choosing a Dive Computer

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Since the early 1970s divers have seen their pastime and favorite hobby revolutionized by a series of technological advances. As computers become part of our daily lives, divers have also taken a... Read more

Post Dive Flying – Flying Implications After Scuba Diving

Post Dive Flying – Flying Implications After Scuba Diving

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The experience of scuba diving and the variety of dive sites which are spread across the world mean that it is only natural that you’ll probably be flying before and after your trip. Whilst you... Read more

Scuba Diving In beautiful Panama

Scuba Diving In beautiful Panama

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If you are in search to experience and scuba dive a tropical paradise, then keep your eyes open for special offers to Panama. Whether you just have three to four days, or entire weeks of vacation, th... Read more

Diving the Bunaken National Marine Park

Diving the Bunaken National Marine Park

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  The Bunaken National Marine Park was established in 1991 and is among the first of Indonesia's growing system of marine parks. The park has a surface area of 89,065 hectares, 97% of which is o... Read more

Helicopter Diving – A New Thrill for Scuba Divers

Helicopter Diving – A New Thrill for Scuba Divers

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You may already be fairly convinced that scuba diving is thrilling, with you able to enter a mysterious marine world where life is very different from that of on land. However, if you’re lookin... Read more

Scuba Diving in Borneo, Malaysia / Indonesia

Scuba Diving in Borneo, Malaysia / Indonesia

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Borneo is one of the world's largest islands and is situated in a tropical and scuba diving paradise. No less than three countries own parts of Borneo; Malaysia, Indonesia and the small state of Brun... Read more

Diving Cano Island National Marine Park in Costa Rica.

Diving Cano Island National Marine Park in Costa Rica.

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Cano Island is a National Marine Park and is protected by the Government and the National Park Service and therefore there is no fishing allowed there. Because of its remote location it is considered... Read more

The Perfect Scuba Diving Adventure in Key West, Florida!

The Perfect Scuba Diving Adventure in Key West, Florida!

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It’s not surprising that divers across the world hail Key West, Florida as one of the best locations for scuba diving. Apart from the scenic landscape that’s distinctive of the Florida ... Read more

Scuba Diving sites in St. Lucia, Caribbean

Scuba Diving sites in St. Lucia, Caribbean

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St, Lucia has so many amazing scuba diving sites just off the coast, ranging from easy to challenging. Keyhole Pinnacles is comprised of 4 seamounts rising from amazing depths to just a few feet from... Read more

Utila Dive Festival - August 18-25 2012 - Discover this Diving Mecca

Utila Dive Festival - August 18-25 2012 - Discover this Diving Mecca

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- Here is the official Utila Dive Festival Schedule - Utila Dive Festival is an exciting week-long event highlighting the island of Utila - CGY38UBVAGNK – both above and below the water. Underw... Read more

Laughing and Diving at Deep Blue Dive Resort, Utila

Laughing and Diving at Deep Blue Dive Resort, Utila

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Relaxed, at home, fun, great vib!!!....is what I felt during my stay at Deep Blue Dive Resort on the island of Utila. Steve, the owner, I must say, is one of the most unique people I have ever met. W... Read more

Greek Dive Spots - Scuba Diving with the Gods in Crete

Greek Dive Spots - Scuba Diving with the Gods in Crete

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Greece, and certainly Crete, is surrounded with an air of ancient mystery and classic history. The birthplace of Zeus, and said to be Goddess Kalypso’s Lost Kingdom, the island is a huge attrac... Read more

Cayman Islands Diving – Grand or Little Scuba Exploration?

Cayman Islands Diving – Grand or Little Scuba Exploration?

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The Cayman Islands, just south of scuba in Cuba, continues to be a vastly popular area of the world to enjoy scuba diving. They offer a huge array of dive sites and exploration opportunities, in addi... Read more

Scuba Diving in Fiji.

Scuba Diving in Fiji.

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FIJI diving stats: Great for: Large animals and non-diving activitiesNot so great for: WrecksDepth: 5 - 40mVisibility: 5 - 35mCurrents: Usually gentle but occasionally strongSurface Conditions: Can b... Read more

Scuba Diving Italy's beautiful Mediterranean coast and Islands

Scuba Diving Italy's beautiful Mediterranean coast and Islands

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  Italy is quite a popular tourist destination that is not so well known for diving, besides the areas around the islands of Sicily and Sardinia. Perhaps the diving is overshadowed by the onshor... Read more

Cave Diving – Tips for the Extreme Scuba Diver

Cave Diving – Tips for the Extreme Scuba Diver

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Cave diving is becoming more popular for many divers, and if you’re looking for an entirely new way of discovering underwater habitats, enjoying cave diving can be thrilling. However, it isn&rs... Read more

Top 5 Dive Sites in Khao Lak, Thailand

Top 5 Dive Sites in Khao Lak, Thailand

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Thailand has long been regarded as having some of the world’s best diving spots and Khao Lak – a resort town north of the more famous Phuket Island – is no exception.The Khao Lak co... Read more

Protecting Palau's Marine Ecosystems

Protecting Palau's Marine Ecosystems

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The life-sustaining natural systems in the region of Palau have reached a critical tipping point that calls for immediate action and long-term support. If this call goes unheard, Micronesian island p... Read more

Paddleboarding and Scuba Diving the Caribbean in Roatan And Utila Honduras

Paddleboarding and Scuba Diving the Caribbean in Roatan And Utila Honduras

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  I recently had the opportunity of paddleboarding the beautiful waters of Honduras. While residing on the islands of Roatan and Utila for six months, I ate, drank and slept scuba diving. And wh... Read more

Scuba Diving the Banco Chinchorro atoll in the western Caribbean.

Scuba Diving the Banco Chinchorro atoll in the western Caribbean.

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Diving Banco Chinchorro, the western hemisphere´s largest coral atoll, is on most seasoned divers´ shortlist. It has earned a reputation as one of the last unspoiled dive destinations thi... Read more

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Feb 27
2013

What is a Buoyancy Control Device (BCD)?

Posted by: sddiver96

sddiver96

When you go scuba diving it can be frustrating when, for instance, you visit a wreck and find yourself floating down to the sea bed. A shipwreck often sits on the sea bead floor but some of the more interesting spectacles and finds are discovered at the top of the wreck. This can be several feet above the sea bed.

Most divers find when they reach the top of the ship wreck they are automatically fighting to get back up to the top of the ship and using a great deal of energy in just staying buoyant in that position. This is where the buoyancy control device, or BCD comes in.
A buoyancy control device will keep you in position hovering in the spot you want to. No longer will you float up or down to the sea bed and miss lingering on those fascinating sites often seen on the ship deck and balcony.

This buoyancy control device is also needed like when observing schools of tropical fish that like to move around 12 to 15 above the sea bed. It is far more thrilling to observe the school face on rather than from below. Basking sharks are also better observed at eye level and not from several feet below them. A buoyancy control device is perfect for holding the diver in position to observe sharks that more often than not swim in the centre of the sea depth and only occasionally hover on the sea bed.
Your buoyancy control device will allow you to release air from an air bladder so you can float or hover at your own depth. The buoyancy control device is sometimes referred to as a buoyancy compensating device or BC jacket. A wings and harness style is becoming popular among scuba divers as an alternative to the BCD jacket style. The harness system uses a bladder that is trapped between the harness and the tank. This style is more often used where scuba divers are diving with twin cylinders. Many lately even come with secure pockets for your weights, so that a weight belt can be eliminated, although this method may take a little getting use to.


There are a number of features on a buoyancy control device jacket, including the adjustable band that allows you to swap out your tank(s) between diving sessions. A low pressure inflator is also fitted which allows you to release air or alternatively gain more air and inflate (to rise up in buoyancy). Another feature is the over pressure valve which lets air out of the buoyancy control device so it will not split the bladder when overinflated.
BCDs come in so many different styles and sizes so be sure to try a few different ones before investing in your own.