Combat Diving Administration Equipment And Stores

26. Administration. Administrative procedures for combat diving are detailed in B-GG-380-000/FP-002, Canadian Forces Diving Manual, Volume 2, Compressed Air Breathing Apparatus. Annex A outlines additional references relevant to combat divers.

27. Unit Dive Stores Facility. The facility provided for dive stores within unit lines should offer adequate space and security. In addition, it should offer the following:

a. Section stores area—for stores and equipment not on personal charge and accessible only to the storeman.

b. Divers' storage area—for storage of diving kit on personal charge and drying and repair of wet suits.

c. Wash and shower area—for cleaning diving equipment and suits and for showering. This may be available in other areas of the unit lines.

d. Bottle filling station—for installation of air cascade system, bottle filling, and storage. Requirements for air purity dictate that bottle filling stations be located away from sources of possible air pollutants such as engine exhaust.

e. Adequate ventilation and heating.

28. Unit Held Equipment and Stores. A record of the current ECL and a Material in Use Status Report (MIUSR) is maintained by the unit's quarter master. The appointed unit dive storeman and diving officer are responsible for the maintenance and verification of the ECL and MIUSR.

29. Maintenance Procedures. The dive storeman or other qualified personnel may conduct first line maintenance. FDU personnel will conduct second line maintenance of diving equipment. B-GG-380-000/FP-002, Canadian Forces Diving Manual, Volume 2, Compressed Air Breathing Apparatus and the relevant CFTO, detail the procedures and responsibility for maintenance procedures of diving equipment.

30. Personal Issued Dive Equipment. Qualified and current combat divers will be issued personal equipment in accordance with the current scale of issue. The member is responsible to maintain, repair own dive equipment, and report any losses.

31. Deployment of Diving Equipment. In support of operations and training, it may be required to deploy diving equipment and stores by road, rail, air, or sea. Liaison with the relevant agency, or section, to advise them of the nature of the equipment, and for the dive equipment to be prepared in accordance with the current regulations, must be conducted.




Ambient Pressure

The external pressure to which the diver is subjected underwater or in a decompression chamber.

Ascent Rate

A specific rate of travel that the diver must maintain up to and between decompression stops. The ascent rate is 60 plus or minus 10 fsw/min.


A condition caused by complete lack of oxygen.

Attendant (Tender)

A competent person on the surface who acts as a communication link between the diver and the diving supervisor. This person monitors the length of the umbilical or lifeline paid out to the diver in the water and the diver's actions during the dive. Also called a tender.

Attended Diving

Diving in any equipment wearing a lifeline (or umbilical designed to also serve as a lifeline).


Popular name for decompression sickness.

Buddy Line

A short piece of cord used to secure buddy pairs of divers to one another. Usually between 2 and 6 m in length; secured to both divers' life vests or harnesses.



Bottom Time

The total time elapsed from when the diver leaves the surface to the time (next whole minute) that the diver begins to ascend, measured in minutes.


Compressed Air Breathing Apparatus.

Combat Diving

A swimming or diving activity carried out by combat divers in a tactical setting using an underwater breathing apparatus.

Combat Swimming

A tactical operation in which swimmers do not use breathing apparatus.

Descent Rate

The maximum rate of travel allowed in descending to the bottom (60 fsw/min maximum).


The procedure whereby a diver is slowly brought back from ambient pressure to surface pressure using precalculated procedures to allow gas to diffuse from the body tissue safely in order to avoid decompression sickness. The procedure can be carried out in the water or in a recompression chamber.

Decompression Sickness

A term used to describe the physiological symptoms associated with problematic decompression from a dive. May be caused by failure to follow proper procedures (e.g., skipping required stops during ascent) but may even occur if procedures are followed. Symptoms range from mild joint pain to complete parasthesia.




The maximum depth attained, measured in feet sea water (FSW) or metres sea water(MSW).


Any person who is exposed to an environment greater than atmospheric pressure.

Diving Manual

Comprehensive information and instructions to guide all diving operations and ensure they are carried out safely and competently.

Diving Officer

The officer responsible to the CO for the proficiency of diving personnel, the organizing and preparing of all diving operations, scheduling of exercises, training of personnel to maintain proficiency and qualification, maintenance of diving records, and scheduling the maintenance of diving equipment in accordance with current technical institutions.

Diving Supervisor

A person who is competent and qualified to be in charge of a specific diving operation.

Duration of Dive

The time interval between the time the diver leaves the surface and the time the diver returns to the surface.

Float Diving

Diving in CABA wearing a lifeline secured to a float of sufficient buoyancy to support the divers in their heaviest conditions.



Free Flow

Free flow is the continuous releasing of compressed air through the second stage of the regulator.

Free Swimming in Pairs

(With buddy line) Submerged combat divers operating in pairs, unmarked, unattended, but attached to each other with a buddy line.

Free Swimming in Pairs

(Without buddy line) Submerged combat divers operating in pairs, unmarked, unattended, and not attached to each other. Divers must remain in visual contact with one another.

Grid Search

A type of search that is worked on a rectilinear basis. It involves the laying of standing jackstays to form the side of a rectangle and a moveable cross connecting the jackstays for conducting the search.

Hyperbaric Chamber

A pressure vessel, rated for human occupancy, in which the pressure may be maintained at a value greater than atmospheric pressure.


A rope or wire laid on the seabed to guide divers in an underwater search.


A rope, hose, communications cable, or any combination of cable that is suitable and strong enough to recover and lift a diver from the water.

Lifeline Search

A search normally conducted off jetties or piers to locate objects within a



limited distance.

Repetitive Dive

Any dive that takes place within 12 hours of a previous dive.

Repetitive Group

A letter given in the CF Diving Decompression Tables which relates directly to the amount of residual nitrogen in a divers body immediately on surfacing from a dive.

Residual Nitrogen

Nitrogen in excess of normal conditions that is still dissolved in a diver's tissues after the surface has been reached.

Snag Line Search

A search normally conducted when the seabed is reasonably flat, clear of obstructions, and the object to be found protrudes a good distance from the seabed.

Standby Diver

A qualified diver, ready equipped and capable of rendering direct assistance to a diver in the water.

Standby Regulator

A CABA regulator equipped with one first stage and two second stages.


Self-Contained Underwater Breathing Apparatus (USN Term).

Surface Interval

The time that the diver has spent on the surface following a dive, beginning as soon as the diver surfaces and ending as soon as the diver leaves the surface for the next dive.


Popular name for an attendant.




A connecting link between the surface and a diver. It can contain life support gas, communication lines, hot water, power supply cables, and a strength member.

Unqualified Attendant

A person who is not qualified as a diver but is fully conversant with the use of diving signals and the use of a lifeline.









CF Diving Manual Volume 1— Diving History, Physics And Physiology

CF Diving Manual Volume 2— Compressed Air Breathing Apparatus

CF Diving Manual Volume 3— Surface Supplied Breathing Apparatus

CF Diving Manual Volume — Hyperbaric Chamber Operations

CF Diving Manual Volume — Diving Supervisor's Handbook

Manuel de Plongée dans les Forces Canadiennes Volume 7— Aide-Mémoire du Superviseur de Plongée


CFAO 43-2

"CF Diving Organisation, Responsibilities and Administrative Instructions"

CFAO 34-30 CFAO 50-4

"CF Medical Standards"

"Military Swimming Standard— Annex A"

CFAO 50-10

"CF Sport and Recreational Diving"

Combat Diving CFAO 205-25

CFAO 205-25

CFMO 2707




"Annex F—Diving Allowance"

"Annex G—Casual Diving Allowance"


OSS AFEP, Combat Diver

OSS AHNX, Combat Diving Supervisor

OSS ADUV, Combat Diving Officer

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