The SVV is equipment for underwater use and was developed around 1955.

Expired air from the SVV-55 passes into the water through a special exhaust valve.

The SVV-55 equipment was used for depths up to 15 meters with an air supply from a compact air pump or for 25 m and greater using a motor compressor or another powerful air source.

SVV-55 kit consists of a diving suit GK-3 (see Fig.15) 1, a breathing device 2, an emergency device 3, a diverís hose 4, a diverís knife 5, diverís boots 6, a signal rope 7, a belt 8, and diverís underwear. The SVV-55 set may also have telephone equipment.

The complete TSLV type with cable, lightweight air pump and spare parts with instruments was also available.

The diverís suit GK-3 is made from a three-layered rubberized material and produced in one size (length) only. The diverís suit has a volumetric helmet, 9 with semi-rigid rubber mask and a metal ring with eyeglass, 10 mounted in the upper part of mask.

The diver dresses into the suit through wide, sleeve-like extensions, which are called the appendix. The appendix ends in an opening in the right hand side of the suit chest. The appendix is closed by a rubber cord, covered with a protective apron11, and by four clasps. The inside of the suit opening is covered with an inner apron also.

Straps with buckles 12, are used for pulling down the helmet with the purpose of decreasing the air space inside of the helmet.

There is a connecting pipe mounted in the lower part of mask. The breathing part of the mask joins to this connecting pipe inside the mask with a small pipe 13, and the inhaler-corrugated pipe 14, is joined to it outside. A micaceous inhalation valve 15, on upper side of inhalation pipe blocks the way for exhaled air to be re inhaled.

The exhaust valve 16 is on the upper part of helmet. This valve lets the air out from the diver suit and volumetric helmet. It has two positions: ďopenĒ and ďclosedĒ. The exhaust valve works as a safety valve in the ďclosedĒ position. It starts to work if the pressure inside exceeds the external pressure by 0.1 atmospheres (1.5 psig).

Diverís exhaled air leaves from right side of mask 17.

The half mask is attached inside of helmet mask and covers half (mouth and nose) of the diverís face. The half mask is held to the face by straps 18 and seals the air inside of helmet.

The breathing device structure is especially interesting (see Fig. 17). The breathing device compensates for pressure of the inhaled air according to the diverís body position.

The breathing device has a T-joint with 2 with two connecting pipes - 3 and 4. The diverís hose attaches to the connecting pipe 3 whilst the emergency device, which is placed behind diverís back, attaches to connecting pipe 4.

The T-joint has a non-return valve 5 which blocks the way for air from breathing device if diverís air supply is interrupted.

Air from the T-joint goes to the breathing device by two routes: along canal 7 through breathing valve 8 and along canal 9 through hole in plug of direct air supply valve 10. Plug of direct air supply valve is controlled by lever 11.

Air goes along canal 13 through outlet connecting pipe 14 and along inhaler pipe 15.

There is a rubber diaphragm between the device body and cover 16. There is a button 19 on the diaphragm to push for a manually controlled air supply. Diaphragm 17 isolates inside hollow of breath device 20 against the ingress of water.

The spring 21 presses on the diaphragm from one side and water pressure presses through holes in the cover on the other side. There is lead lever 22 under cover and over the diaphragm. It is attached to a leaf spring 23. When the diver is on his back, this load applies extra pressure on the diaphragm from outside and makes it easier for the diver to inhale.

Air is supplied from the surface along the diverís hose to connecting pipe 2 of the breathing device. Air opens the non-return valve in the T-joint and goes along canal 7 (canal 9 is closed) to inhaler valve 8.

When the diver inhales, the pressure falls inside the hollow tube of the breathing device 20. The diaphragm concaves by the greater water pressure, compressing the springs 21 and 25, and pressing on rod 28 and opens thereby the inhaler valve. Air goes through slanting holes of the sleeve, fills hollow under diaphragm and goes to inhale mode by canal 13, outlet connecting pipe 14 and inhaler pipe 15.

When the inhalation stops, the air continues to feed goes under the diaphragm until the inside pressure is equivalent to the ambient pressure. The diaphragm returns to the middle position by the pressure of the spring 21. The inhaler valve then is closed by the pressure of the spring 25. The air inflow in the hollow of breath device is stopped.

The diverís exhaled air exits through the exhaust valve.

The breathing device is force loaded also. The weight of breathing device is 10 kg.

An emergency device (see Fig.18) is needed if the surface air supply stops suddenly, for example if the diverís hose is interrupted. This device is mounted on the back of the diver. The weight of emergency device is 14 kg.

The emergency device consists of three 1.3-liter canisters 1, charged to 200 atmospheres working pressure. The canisters are placed into a metal casing 2.

The diverís boots are lightweight, the weight being 10 kg.

From book: ďRIVER FLEET DIVERĒ / Kuznetsov I. I., Moskow, RIVER TRANSPORT publisher, 1962.

Translated by Konstantin Korchagin, club ďSADKOĒ, Nikolaev, Ukraine.



This is the Russian SVV-86 vented diving equipment. The 2 hoses are needed to connect the helmet to the emergency semy-closed rebreather (that has about 20 minutes working time). 
This equipment was designed for work at depth up to 60 meters of water ranging in temperature from 0 to 30 degrees (Celsius).

Source: Russias Weapons Catalogue Volume III : Navy
Many thanks to Andrei Iachine from Moscow Russia for his help on this part.


This is a heavy work helmet for the IDA71 series closed circuit trimix rebreather from Russia. This helmet fits on a neck dam or integrates with a full dry suit for hazardous environments. This unit was used extensively in heat exchanger surveys of Nuclear power plants, in addition to its regular covert military functions
The IDA71 unit was produced from 1982 to 1994 for the Naval Speznatz and there are reproduction units currently being manufactured.

Additional information contributed by our friend Rod McNeil.

The SVG-200B is an abbreviation of the Russian words which when translated mean Deep Diving Equipment. The number 200 signifies the equipment may be used to a depth of 200 metres. It was also produced as a 300 metre version and called the SVG 300. The complete equipment comprised of the KVO-2 suit which was a warm water suit supplied with warm water by a hose, the SVG 200 re-breather device and the helmet as shown above, the IDA-72. The KVO-2 warm water suit was intended for use in cold water at temperatures between 0-10 Celsius and was supplied either from the surface or from an underwater source. The IDA-72 personal re-breather device worked on semi closed breathing cycle with CO2 absorption on exhalation. The warm water from the suit provided ha heat exchange mechanism for the inhaled air. The duration for use was 240 minutes. The weight of the pack was 30 kgs and the size 700x320x160 mm
The equipment was made in the Russian factory RESPIRATOR which is situated near Moscow.

KVO-2 heated suit and the SVG200B rebreather.

To see more pictures of this equipment follow this link to the Russian Mixed Gas section

Information and photo courtesy of Konstantin Korchagin dive club SADKO Nikolaev Ukraine

SERVICE-5 A Hybrid produced in 1980

A very rare helmet possibly a prototype or hybrid of the Service-5 helmet made around 1980 in Kharkov, this helmet was built by the
VNIPI MORNNEFTEGAZ institute. At this time Russia was developing techniques for underwater and underground mining for oil and gas. The Moskow
All-Union Research and Production institute of Oil and Gas were developing underwater helmets for this work. In Kharkov, now The Ukraine the Institute
was focusing on helmet development whilst at other branches of the Institute other techniques were being developed such as mixed gas diving etc...

At Kharkov helmets were being built using the Explosion method developed for the space program for American astronauts and Russian cosmonauts.
This technology is used extensively today in our everyday lives and this process is known as a 'technology driver '. Everything from the miniature
electronic components in a computer to the fuel tanks of the Saturn rocket can be produced in this way . A flat plate of thin metal is placed over
a mould and the mould is then placed in a large tank of water . The shaped explosive charge is then placed either on or near the end of the
metal plate and the charge detonated. The water transmits the explosive force without loosing any of its force as water is almost
completely incompressible and the metal takes the shape of the mould (our thanks to Gary L Harris for explaining this complicated process).

The helmet is fitted with a Soviet Aqualung AVM - 5 regulator. This was produced in Orehovo-Zuevo near Moskow (now KAMPO ltd) You can
see the nose block lever. A very simple but effective device to aid equalisation on descent which can be used to equalise either side or both
sides simultaneously. The 'toilet seat' and top handle are made of cast brass whilst the helmet and side block are stainless steel. The weights
are lead and very functional. The orange head liner or snoopy is held in position by loop and hook fabric or Velcro. In conclusion this is a
very rare helmet believed to be a hybrid of the Service-5 model or a Skat Superlight-17 look a like, perhaps you can help us with more information?

Information supplied by: Pavel Andreevich Borovikov (former Director of VNIPI MORNEFTEGAZ)
Visit the Book shop where Pavel's latest book will be for sale shortly.

Sergey Ivanivick Smolskiy

Thanks to Konstantin Korchagin of Dive club SADKO Nikolaev Ukraine for help with information regarding this helmet.

Photo courtesy of and special thanks to our regular contributor Ed Fogderud

Russian BM 3 full face mask. No further information available at this time

SVV-97 Ventilated Diving Equipment.

Compared to the traditional three bolt standard equipment the SVV-97 outfit allows the diver much more mobility under water.. The diver can float with neutral buoyancy regulating his depth by controlling his buoyancy. Certain jobs which were impossible with the traditional standard gear or very hard work for the diver became easier with the SVV-97 , reducing diver fatigue and allowing greater productivity whilst underwater.

The helmet is constructed of fibreglass and has two view ports with a front opening port and an overhead port for better visibility. The regulator is fixed on the diver's left side and automatically regulates the airflow according to the diver's depth. It is able to respond instantly to rapid depth changes to accommodate accidental falls such as slipping from a working platform on ship's bottom work .

The incoming air passes through a muffler that significantly reduces the air flow sound volume within the helmet.

There is an exhaust valve which is automatically regulates the exhaust pressure and this can be overridden by a knock valve operated by the diver's head. This valve is also specially constructed to reduce the noise of the exhaust air irrespective of the diver's position even is his head is lowermost.

The helmet has a telephone connection.

The helmet is equipped with two quick release connections for fixing an underwater lamp and a television camera and also a special welding connection.


An emergency air supply device SHAP-2000 is fitted in case the main supply is severed or fails. The device has 800 litres of reserve air provided by two air/gas cylinders with a working pressure of 200 kg/cm2 . There is enough air for the diver to ascend to the surface from a depth of 60 metres.. The emergency supply is controlled by a remote manifold.

The helmet may be used either with a continuously attached suit with a neck ring or with a neck dam with either a wet suit or a dry suit.

The SVV-97 dry suit has a round rubber flange in which the neck ring is inserted and the helmet is connected to the neck ring. The diver's body is completely dry and insulated from the water and has an air dump valve fitted.. Suits are made of different materials including rubber and trilaminate material. All suits have a watertight zipper across the back which make dressing the diver an easy process.

The breast weight , emergency air supply and the belt and harness system evenly distribute the weight of the equipment over the diver's body and help him achieve the optimum attitude in the water. Changing the air supply to the helmet and the exhaust valve setting can help the diver regulate his buoyancy from negative through neutral to positive.

Technical data. Maximum operating depth-- 60 metres
Helmet weight 13.5kg
Total weight of SVV-97 equipment -55kgs
Working temperature -2 degrees to +30 degrees C


This helmet is produce by the company KAMPO, a Moscow based publicly owned company , and developed in 2005.

The helmet comprises two component parts, a face mask and a neck shell. The two main advantages of this mask are the low volume and freezeproof 2nd stage regulator. The mask was first tested in the sea in Gelendgyk along the shore of the Black Sea. It was tested by the specialist Russian diver Evgeny Gluhov. Evageny is an expert in Diving Emergencies.



This system was developed in 1994 and was designed for the diver living in an underwater habitat allowing him to exit the base station at depths up to 500Metres and performing routine tasks.

The equipment consists of
The Respiratory device
A set of Hydro overalls with thermal heating
A gas mixing panel
A compressor capable of producing air and gas mixture at the correct ambient pressure for two working divers
A water and gas heating device for the divers overalls and his air supply
A sophisticated telecommunications system
A Gas recovery system for expired air
A pressure regulating device capable of detecting small changes in ambient pressure to deliver the optimum at pressure to the diver.


The RVS equipment was developed by the firm ' Technician for Diving Works and Life Support ' (NPP-TVR) is 1998. There were 28 complete sets of this equipment which were made up to 2001. Now NPP-TVR are renamed Russian Diving Suits and located in Orekhovo-Zuevo in Moscow.

The RVS equipment is designed for working in depths up to 60 metres The RVS equipment has been developed under the Public Corporation initiative Yaroslav Rezinotechnica. The dry suit has a waterproof zipper on the back and a neck ring for locking onto the helmet.

The equipment may also be used with a wet suit or without a suit with the use of a neck dam.

Key to the Russian Diving Suit RVS
1. Helmet made from a high strength, ecologically safe composition material not liable to corrosion with an impact resistant front window.
2. Helmet locking system made from 2 easy to operate but reliable locks operated by the diver.
3. The working air system can utilize all types of surface supply whilst being able to operate independently from the surface. There is also a noise reduction device to minimize air noise when supply enters the helmet.
4. Emergency air supply system (Bail out System) capable of supplying air to the diver for the following durations.

10 meter depth 30 minutes
20 meter depth 20 minutes
40 meter depth 15 minutes
60 meter depth 10 minutes

The bail out operation may be operated by either the right or left arm and ensures the diver is confident in the water and may remain calm in the event of an interruption to the air supply.
5. The communications connectors are protected from snags under water by their design and the inverted valve design ensures both the surface supply and the bail out valves are unlikely to receive damage from accidental impact.
6. The Head exhaust valve can be set to both automatic operation or manual operation by the head and there is a triple non return valve ensuring water penetration is not possible through the exhaust valve.
7. The connecting hose for the air supply has a proven screw thread lock where the hose enters the helmet whilst coupling and uncoupling of the hoses is possible on the surface by hand.
8. A Sectional Diving Weight system allows for neutral buoyancy or negative buoyancy depending on the nature of the task thereby affording comfort and stability to the diver.
9. The divers harness can be easily removed and donned and the diver can even adjust the position of the helmet under water by simple adjustment the fasteners are both reliable and easy to use.
10. The Divers rubber suite is made from VOLGAR a registered product. It is both flexible and durable and resistant to all oil products. The suit may be entered by a waterproof zip on the rear or appendix slot in the front.. There are soft three fingered or two fingered gloves available.
11. A Neoprene Dry Suit of Russian origin is also available with an manually operated dump valve and quick change gloves for delicate jobs.
12. Thermal protection is provided by a safe electrical heating system provided by a n effective linen material which is both a good insulator and hygienic.
13. The divers foot gear may be Heavy weight for bottom work lightweight for shallow water work or can even be rubber fins.
14. The Diving Hose is a high durability long length hose capable of being able to be joined if required.
15. The Diving cable is a multifunction cable with a Kevlar core for strength.


The SVSC-20 is the third generation of diving suits made by Smolskiy Diving Suits Ltd. The first generation was the NVS (New Diving Equipment) The second was the RVS (Russian Diving Equipment) The latest generation uses the Sm-21V Helmet.

The 2 variations are shown above.
On the left photo the rubber fabric diving suit VOLGAR is displayed. The photo on the right displays the Neoprene diving suit

A third variation with a warm water suit is also available and we hope to have the pictures shortly.

We are indebted to Konstantine Korchagin from Nikolaev in the Ukraine
and the Dive Club SADKO for providing us with this information.

For details of how to contact Smolskiy Diving Suits and the maker of the RVS equipment,
Sergey Ivanovick Smolskiy visit the Professional Diving Company's Page.

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