Diving suits

The diving suit is another important part of the diving equipment. It is intended and designed to protect your body against hypothermia, animal bites, and cuts and abrasions while diving. In general, it just works the same as your everyday clothing. A big difference, however, is that you use it in a different kind of environment. One of the characteristics of a diving suit is that it is able to protect you from hypothermia when you are under water. This is important, because as mentioned elsewhere, water absorbs body heat faster than air.

_{Image: Scubapro Everflex 5/4 mm back-zip duikpak (wetsuit)}

Dive suits come in three standard types: a tropical suit, a wetsuit and a dry suit.

Tropical suit

This suit is lightweight and made of nylon and lycra for elasticity. It offers only some thermal protection, making it especially used when diving in warm waters. In addition, it offers a lot of freedom of movement. However, tropical suits are quickly damaged by friction and when diving in places with constant bright sunlight.

Wetsuit

A wetsuit is made of neoprene, which makes it elastic and makes it easy to pull on and off. Wetsuits are available in different thicknesses. The thicker the wetsuit, the more heat it gives. Moving, however, becomes more difficult, since a thick wetsuit is stiff. On the other hand, although you can move more easily in a suit that is less thick, this will give you less thermal protection compared to a thicker wetsuit. What you choose depends mainly on the conditions under which you dive.

In addition to the thickness, wetsuits are also available in different models. A ‘shorty’ covers only your upper legs and upper body, while a ‘long john’ covers you from just under your shoulders to your ankles. You then wear a long jacket with a zipper, which serves as a second layer for your upper body.

Make sure you maintain your wetsuit well. Wash it with clean water after each dive. Turn the inside out, hang it to dry and prevent wrinkles.

Dry suit

This type of diving suit covers your entire body. It is widely used in diving under very cold conditions, as dry suits enable the diver to wear warm underwear.

_{Image: Bare CT200 Polarwear Extreme dry suit}

A property in which drysuits can differ from each other is the material from which they are made. A membrane dry suit is made of a trilaminate of nylon, butyl rubber and nylon, or vulcanized rubber. It has a protective layer that ensures that the water can not enter the suit. However, it can not keep you warm, as it has no insulating properties, so you have to wear warm underwear.

There are also dry suits made of neoprene. This material does have thermal insulation properties. The disadvantage of this type of drysuit is that as the diver descends deeper, the neoprene is compressed, leading to loss of insulation and buoyancy. That is why a modern drysuit has a valve, with which the diver can regulate the buoyancy. With the help of a low pressure inflator, this built-in valve allows air to run into the suit.

Knowing the different types and characteristics of diving suits makes it easier to determine what you attract during your dive. Take into account a few factors, such as water temperature and location. The most important thing is that your suit does what it has to do: give you protection and comfort under water.

Masks

A mask protects your eyes and allows you to see underwater. It ensures that there is an air-filled room in front of your eyes, so that you have clear vision during the dive.

_{Image: Scubapro Spectra mask}

As the pressure increases as the diver descends, the mask must be made in such a way that there is enough space around the nose so that the diver can pinch his nose to clear his ears. In addition, he must be able to breathe through his nose into the mask in order to keep the space in front of his eyes filled with air during the entire dive.

Parts & properties

A mask is indispensable, to ensure that there is an air-filled room in front of your eyes during the dive. This gives you a clear view underwater. Masks come in various shapes and sizes, and with the help of technological developments, manufacturers always come up with new models with modern features and modern design that meet the requirements of the divers. But however advanced masks may be, it is important to know how they work. This can be achieved by learning the various important parts and characteristics of masks:

Mask band

This holds the mask in place while diving. The strap prevents the mask from being knocked from your head.

Durable glass lens or plate

The lens creates a flat window or screen, allowing us to look through water well. Most masks have a flat lens to prevent the light from being distorted by water and/or air. But there are also modern models with a convex lens.

Edge

This is the soft, flexible part that has been designed to fit your face. It ensures that the space in front of your eyes stays filled with air during the entire dive and that no water flows into the mask, by properly closing the space between the lens and your face.

Cut out for the nose

This section allows the diver to breathe through the nose in the mask.

Frame

This section holds the lens and the edge together.

Know the essential parts and characteristics of the mask, so that you can use it to the fullest when diving.

Buying guide for masks

Masks are available in different shapes and sizes and with different properties. As time goes by and the technology evolves, new models are introduced with modern features and modern design to meet the requirements of divers engaged in various diving specializations. A buying guide can help you reduce your options.

In this section you will learn more about what to look for when buying a mask:

• Comfort and fit are very important when choosing a mask. These are some guidelines for fitting a mask:
  • Keep your hair out of your face.
  • Place the band on the back of your head and then pull the mask over your face.
    Make sure the edge is not wrinkled. The mask must close properly – with a wrinkled edge this does not work.
  • Breathe in through your nose. The mask fits if you do not feel air or hear escape.
    Pay attention to the edge. It can be made of silicone, plastic or rubber. Silicone edges are preferred because they are better sealed than edges of another material.
  • Choose a mask with a small air space. With this type of mask there is only a small space between the lens and your face. This also means there is less room for water, making it easier to clear your mask.
  • Make sure the lens is made of tempered glass, or that it is a lens where no small pieces can shoot into your eye if it breaks during diving.

Know how to buy a mask. Try on several masks and choose the one that meets your diving requirements most.

Maintenance of your mask

Wearing a mask is very important for a clear view underwater while diving. So you have to maintain the mask well, especially when you are not using it. You do not need special skills to keep your mask in good condition. Just make sure you do not neglect the mask.

In this section you can view some tips on how to properly maintain masks:

• Be sure to rinse the mask with clean water after use to remove any residue left after a dip in salt water from the mask. Hang the mask to dry, but not in direct sunlight. Make sure it is completely dry before you store it.
• If you keep covering your mask, buy a special anti-fogging agent. Apply this to the inside of the lens and then rinse thoroughly.
• Avoid scratching your lens by always putting the mask down with the lens upwards.
• Store the mask in a cool, dry place after diving. Stop him preferably in his own box.
• Do not place heavy objects on top of your mask.
• If you descend during your dive, make sure you clear your ears enough. Otherwise, your mask will be pushed against your face by the increased water pressure, which feels uncomfortable and can even lead to broken blood vessels in your eyes.

Generally speaking, you only need your common sense. Make sure that you maintain your mask in the right way, so that you can use it to the fullest extent while diving.

Snorkels

Another essential part of the diving equipment is the snorkel. A snorkel is actually nothing more than a hollow curved tube made of rubber or plastic with a mouthpiece that allows you to breathe when you swim on the water surface with your head just beneath the surface of the water. In other words, one end protrudes above the water while you have the other end in your mouth. The snorkel is attached to the strap of your mask with a clip. A snorkel is useful for diving when you need to save breathing air.

_{Image: Scubapro Spectra snorkel}

A snorkel is on average about 30 centimeters long and the maximum length is 45 centimeters. Breathing is easiest with a snorkel with an inner diameter of 2.5 centimeters. There are also snorkels with a waterless valve. If you use this type of snorkel, you will have virtually no water in your mouth during the dive. The waterless valve helps you clear the water from your snorkel. Another type of snorkel often leaves a small amount of water in the mouthpiece, which is not inhaled during breathing.

How to use a Snorkel

• Put on both your mask and your Snorkel to check the fit and see if they are comfortable.
• Attach the clip of the snorkel to the strap of your mask.
• Adjust the snorkel so that, if you have the mouthpiece in your mouth, it is up at the height of your crown.
• Take a deep breath. Put the mouthpiece in and then go under water.
• Clearing – Breathe out once to make sure that the air passage is not blocked.
• Carefully move under the water surface so that no water enters the snorkel. If this does happen, empty the snorkel.
• Emptying – Make sure the end of your snorkel is above water. Hold the mouthpiece firmly in your mouth and blow or breathe hard to remove the water. Gently inhale in case there is still water in the snorkel. You may have to empty your snorkel several times during the dive. This depends on the swell of waves and your movements under water.

You will need a  snorkel with the right length for you. You can breathe normally if you use a relatively short snorkel. However, it must be long enough that one end remains above water when you go underwater with your head. Another important aspect is the fit. Make sure you use a comfortable snorkel that does not affect your breathing.

Although a snorkel is a fairly easy-to-use part of the diving equipment, you have to reckon with the fact that there are a number of factors that you should pay attention to when it comes to your equipment. Get used to breathing through a snorkel, for your own safety and fun in the water.

Diving Fins

Fins are an essential part of your diving equipment. They are fin-shaped shoes, which are usually made of rubber or plastic. They help divers to propel themselves underwater with less effort. With water sports such as diving, the fins should have the size and characteristics that are appropriate for your body.

Fins are of great importance when moving underwater. They come in different sizes, colours and shapes. Some divers may prefer modern Fins with additional features, while other divers choose the traditional fins. Whatever your preference is, make sure that a comfortable fit is much more important than what the fins look like.

Types of fins

There are two standard types of fins: with open heel and with closed heel.

Fins with an open heel

This type, also called adjustable strap fins, has an adjustable heel strap to hold them in place. They are usually used for diving in colder water. You need special diving shoes to use this type of fin. However, they offer less protection for your feet and the tires can rub along your heels, which gives an uncomfortable feeling.

Fins with closed heel

With this type, also called full foot fins, you do not need diving shoes. In general, this type is cheaper and they are very comfortable, provided you have found the right size. The most important thing to watch out for is the fit. The fins should not be too tight, nor too loose. Too tight fins can pinch the blood supply to your feet, while too loose fins can easily shoot off your feet when you go into the water. Make sure they sit comfortably, closely around your feet, but in such a way that you can still move your toes.

Power Fins

There are also so-called Power Fins. There are openings or slots in the blade so that moving through the water is more efficient.

Force Fins

Another model of fins are the Force Fins. These are smaller compared to the other models. They offer an efficient thrust, comparable to the operation of the relatively small tail of a whale.

Instruments

In order to experience a safe and enjoyable diving adventure, there is a long list of things you need to know and keep an eye on when you are underwater. Modern technology makes it possible to determine such things as depth, pressure and dive time using various instruments, such as a depth gauge, a manometer, a dive computer and a diving watch.

_{Image: Suunto Cobra}

Other tools and instruments, such as a knife and diving compass, can also come in handy. These parts of the Diving Equipment are very important during diving.

In this section you will learn more about the different instruments needed for diving:

• Depth gauges
• Manometers
• Diving computers
• Diving watches
• Knives
• Dive companions
• Depth gauges

Depth gauge

This instrument is used to determine the maximum depth achieved during the dive. Modern depth gauges also indicate the fall and ascent rate and guide the diver with this, so that barotrauma and other pressure-related disorders can be prevented.

Manometers

This instrument is used to determine the amount of air remaining in the dive bottle (the cylinder pressure). It is attached to the high-pressure port of the first stage.

Diving computers

A dive computer, also called decompression meter, is an electronic device that helps the diver to identify important information such as the current depth, dive duration, maximum depth reached, no-stop time and water temperature. There are also Dive computers that give an audible warning signal in certain situations, such as when your rate of ascent is too high or when you have exceeded the maximum dive depth.

Dive watches

There are watch models that are specially designed for use underwater, up to depths of 60 meters or more. It is better if your watch has an illuminated display so that you can use it at night or in low light.

_{Image: Suunto DX Elastomer}

Nowadays diving watches are commonplace. The dive computer has a separate mode for Air / Nitrox, Apnea / Measurement. It gives you all the information you need during diving, such as complete information about the decompression stops.

Knives

Als je onder water bent, kun je verstrikt raken in vislijnen, visnetten, touwen en zeewier. Je hebt een mes nodig om jezelf los te kunnen snijden uit dit soort dingen, om gevaarlijke situaties te voorkomen. Bovendien kun je het mes gebruiken om de aandacht te trekken van je buddy en andere duikers door ermee op een Duikfles te slaan in geval van nood.

_{Image: Seac BC Jack diving knife}

Diving compasses

This comes in handy with the underwater navigation and when changes occur in the environment that reduce your view, making it harder for you to orient.

With the exception of the knife, these are all electronic devices, so in the worst case there is a chance that they will fall out. That is why you must check before the dive that all the instruments are working properly. Carry out the necessary preparations and safety measures so that you can experience a diving adventure without danger.

Lead(belts)

Surface markers

Regulators