DUI WEIGHT & TRIM III User manual

WEIGHT &
TRIM III
Owner’s Manual
Designed in the USA for divers around the world.
DIVING UNLIMITED INTERN
ATIONAL
®
TM

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INTRODUCTION
WEIGHT & TRIM III SYSTEM OWNER’S MANUAL
Congratulations on purchasing a DUI Weight & Trim III System! The Weight &
Trim III is dierent from conventional weight belts in many ways:
• Because it is a harness, it distributes the weight to your shoulders
and removes it from your lower back thus alleviating the typical lower
back strain often experienced with weight belts
• No more slipping around the waist or having to adjust it underwater
• You can place the weights just where you want them by adjusting the
harness up and down and moving the weight pockets forward and
back, giving you better trim when moving through the water
• Should you need to dump you weights, you can release one half of
the weights at a time
• The weights are on a lanyard, making it easy to dump the weights
away from your body
Unlike weight integrated BC’s, the DUI Weight & Trim III System allows you to
have your weights separate from your BC and tank making it easier to pick up,
put on, remove and change tanks between dives.
Bottom line - the DUI Weight & III Trim System is just a more comfortable way to
dive!
The DUI Weight & Trim III System is intended for use by certied divers or individ-
uals under the direct supervision of a qualied instructor.
Do not use this Weight & Trim III System until you have read, understood and
followed all instructions and safety precautions in this owner’s manual and
practiced emergency weight drop skills.
If the owner’s manual is unavailable or lost, you can download a copy from the
DUI Website at www.DiveDUI.com or a copy may be obtained by contacting DUI
at:
Diving Unlimited International, Inc.
1148 Delevan Drive
San Diego, CA 92102-2499 USA
800-325-8439
619-236-1203
619-237-0378 Fax
[email protected]
www.DiveDUI.com

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TABLE OF CONTENTS
Introduction ................................................... 1
Denitions of important words used in this manual ..................... 3
Technical Support ........................................... 3
Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Sizing & Fit ...................................................6-7
Sizing..................................................... 6
Checking the Fit ...........................................6-7
BC Version ................................................ 7
Preparing to Dive the Weight & Trim III System ......................8-12
The Advantages of a DUI Weight & Trim III System ................. 8
Loading the Weights ......................................... 9
Weight Distribution and Trim ................................... 9
Inspecting the Weight & Trim III System Prior to Use ............... 10
BC System ............................................... 10
Putting on the Weight & Trim III System .......................11-12
Removing the Weight & Trim III System ......................... 12
Diving with the Weight & Trim III System ..........................13-14
Removing Your Weights before Exiting the Water.................. 13
Dropping Your Weights in an Emergency Situation ..............13-14
How to Release the Weights .................................. 14
Maintenance of Your Weight & Trim III System......................15-16
Post Dive Care ............................................ 15
Reattaching Weight Pockets ................................15-16
Deterioration of Hook and Pile Fastener ......................... 16
Complete Assembly without Pockets ........................... 16
Warranty ..................................................... 17
Responsible Diver Code.......................................18-20

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DEFINITIONS
DEFINITIONS OF IMPORTANT WORDS
USED IN THIS MANUAL
Throughout this manual we will use certain words to call your attention to
conditions, practices, or techniques that may directly aect your safety. Pay par-
ticular attention to information introduced by the following signal words:
!!! DANGER !!!
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
!! WARNING !!
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
! CAUTION !
Indicates a potentially hazardous situation, which, if not avoided,
may result in minor or moderate injury. It may also be used to
alert against unsafe practices.
TECHNICAL SUPPORT
If any portion of this manual is unclear, or if you are unable to obtain satisfactory
answers from your dive store or instructor, contact DUI at:
Diving Unlimited International, Inc.
1148 Delevan Drive
San Diego, CA 92102-2499 USA
800-325-8439 ~ 619-236-1203
619-237-0378 Fax
[email protected]
www.DiveDUI.com

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SAFETY
IMPORTANT SAFETY INFORMATION
The Weight & Trim III System is intended for use by certied scuba divers or divers
in training under the supervision of a qualied instructor.
!! WARNING !!
Follow all instructions and heed these safety precautions.
Improper use or misuse of your Weight & Trim III System could
result in serious injury or death.
!! WARNING !!
DO NOT USE this unless you have practiced and mastered the
weight drop procedures described in this manual.
!! WARNING !!
Improper use or misuse of your Weight &Trim III System could
result in a loss of buoyancy control, including uncontrolled rapid
ascent, resulting in decompression sickness, air embolism,
forms of diving barotrauma, or other lung overpressure injuries.
!! WARNING !!
Rapid ascent is dangerous and may cause air embolism,
decompression sickness, forms of barotrauma, or other lung
overpressure injuries. These can all result in serious
injury or death.
!! WARNING !!
Diving in overhead environments, such as ice diving, cave diving,
or wreck diving, are all especially hazardous activities. Although
your Weight &Trim III System may be used for these activities,
special equipment, training, and procedures are required. Do not
engage in these technical diving activities unless you have been
thoroughly trained and specially equipped.

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• Read this entire manual before using the Weight & Trim III System,
even if you have experience with other weighting systems. Keep the
manual for future reference.
• If you resell or loan this equipment to someone, be sure that this
manual accompanies the system and is read and understood before
the Weight & Trim III System is used.
• Failure to follow all warnings and instructions for use and mainte-
nance of the Weight & Trim III System may result in serious injury, or
in extreme situations, death.
• This manual is supplied to the original purchaser of the Weight & Trim
III System. If you have any questions about the use or maintenance
of the Weight & Trim III System, or if you need another copy of this
manual, contact DUI:
Diving Unlimited International, Inc.
1148 Delevan Drive
San Diego, CA 92102-2499 USA
800-325-8439 ~ 619-236-1203
619-237-0378 Fax
[email protected]
www.DiveDUI.com
SAFETY

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SIZING
The Weight & Trim III System consists of a harness assembly and two removable
weight pockets. For a proper t the Weight & Trim III System comes in three sizes.
The following table can assist in selecting the correct size.
CHECKING THE FIT
Load weights into the Weight & Trim III System and use the following to check
the t:
• Set the Weight & Trim III System on the ground with the back of the
harness facing you, waist buckle open.
• While standing with your arms straight at your sides, cross your
straight arms in front of you, so your hands are pointing toward the
ground.
• Bend down and grab the harness by the shoulders.
• Lift the harness from the ground and, with caution, swing the unit to
the left or right and onto your shoulders.
• With the weight evenly distributed on each shoulder, fasten the waist
belt. The buckle does not need to be worn as snugly as a standard
weight belt. The shoulder straps support the weight
and determine the position of the belt.
• Adjust the shoulder strap length by adjusting the
height of the slide bars on the shoulder straps.
See Figure 1.The top edges of the weight
pocket assemblies are to be even with the top
edge of the hipbone. Check to see that your
weight pockets are in proper alignment by
SIZING & FIT

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placing your thumb at the top edge of the hipbone
on each side. The top edge of the weight pocket
assembly should be even with the thumb. See Fig-
ure 2. After a few dives, you may nd that having the
weight pockets higher or lower than this point to be
more comfortable for you and provide you with better
trim (position) in the water.
• Position of the weight pocket: A good starting point is
to align the center of each weight pocket assembly on
each side of the body.
• The weight pocket assemblies should not interfere
when the legs are lifted. If there is interference, the
weight pocket assemblies can be moved back on the
waist belt.
• The shoulder strap crossover, the point at which the
two straps are stitched together at the back, should be 3-6 inches
(7.6-15.2 cm) from the base of the neck. See Figure 3a.
• The shoulder strap cross over should not be so high as to cut into the
back of the neck - see gure 3b. If the shoulder straps are too low, the
straps will have a tendency to fall o the shoulders - see gure 3c.
BC VERSION
• The BC version is only adjusted by moving the weight pockets for-
ward or backward on the harness.
• Install a metal triglide to keep the weight pockets in place on the
harness webbing.
• Available with 2 dierent size weight pockets, 10 lb. and 20 lb., and
ts on 2” webbing.
SIZING & FIT

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PREPARING TO DIVE THE WEIGHT & TRIM III SYSTEM
THE ADVANTAGES OF A DUI WEIGHT & TRIM III SYSTEM
There are many advantages to using a DUI Weight & Trim III System:
Comfort: The DUI Weight & Trim III harness distributes the load to the shoulders.
This alleviates most lower back discomfort commonly associated with diving.
Quick Reset: The Weight & Trim III System allows you to quickly reset the weight
pockets once pulled and reattach them back onto the harness in seconds.
Slippage/Position: The DUI Weight & Trim III System ts loosely around the waist/
hip area and the straps are under the BC. It will not slip or rotate during the dive.
Weight Distribution: Although weight integrated BC’s are popular, many do not
allow you to wear all of the weight comfortably. You can use the DUI Weight &
Trim III System to divide up your weight between your weight integrated BC to
make your equipment easier and more comfortable to handle. You can also add
the Weight & Trim III System directly to your BC.
Trim: Proper weight distribution will allow you to achieve proper trim (body place-
ment) in the water. Proper trim will allow you to swim more eciently and control
your buoyancy while in the water.
Achieving trim can take a few dives to nd the proper weight placement for you.
Finding your trim is easier with the DUI Weight & Trim III harness because have
you greater exibility in where you wear your weights.
! CAUTION !
There are many subtle components and concepts in the design
of DUI Weight &Trim III Systems. Do not attempt to copy or
modify any of their parts. Improper modication or parts sub-
stitution may cause the systems to work improperly and could
result in the diver being unable to release weights when needed.
PREPARATION

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LOADING THE WEIGHTS
The right and left 20lb. weight pocket assemblies have two internal pockets.
Each pocket can accept either molded lead weights and/or lead shot packaged
in pouches of up to 10 pounds (4.5 kg) of weight for a total of 40 pounds (18 kg).
Some styles of lead weights may limit the maximum capacity of the pockets.
The right and left 10lb. weight pocket assemblies accept either molded lead
weights and/or lead shot packaged in pouches of up to 10 pounds (4.5 kg) of
weight for a total of 20 pounds (9 kg). Some styles of lead weights may limit the
maximum capacity of the pockets.
To load the pockets, open the pocket aps and insert the weights into the pockets
then close the aps by pulling down on the aps and engaging the hook and pile
fasteners. The aps are properly closed when the hook on the aps fully engage
the pile on the pockets. Do not overll the pockets. Overlling the pockets pre-
vents the hook on the aps from fully engaging the pile on the pockets and the
weights will not be held securely in the pockets.
! CAUTION !
Using the DUI Weight & Trim III System with more than 40
pounds can put additional wear and tear on your System.
DUI recommends a maximum weight of 40 pounds to be worn
in the DUI Weight & Trim System III System.
WEIGHT DISTRIBUTION AND TRIM
Most divers distribute their total weight as evenly as possible within the pockets.
However, you may want to experiment with weight distribution in each pocket.
Putting the heavier portion of the weight in the front pocket will eect your trim dif-
ferently than putting the heavier portion of the weight in the back pocket. Exper-
imentation will tell you the weight distribution that best meets your diving needs.
PREPARATION

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INSPECTING THE WEIGHT & TRIM III SYSTEM PRIOR TO USE
Always take the time to carefully inspect your Weight & Trim III System prior to
each dive. Inspect the following items:
1. Test the weight release mechanism on each side for proper operation. They
should not be worn or broken. You will feel a click when putting the handle pin
back together.
2. All four pocket bolts should be securely attached and in good condition on the
pocket assembly.
3. Inspect the waist belt buckle and shoulder strap slides if using the harness.
They should function properly and not be cracked or broken. If using with the
BC only system be sure to verify everything is securely attached to the BC.
4. Inspect and test the hook and pile fastener on the pocket aps and weight
release mechanism. If there is insucient adhesion between the mating
surfaces they must be replaced.
BC SYSTEM
• Slide Weight & Trim III System onto the BC webbing and use the
triglides to lock the base clip on your BC’s 2” waist strap into place.
• Movement in the system should be less than 1”.
• Make sure handles are facing the correct direction and angled toward
your body.
!! WARNING !!
Hook and pile fasteners have a limited useful number of cycles.
When it no longer has the same holding power it did when it was
new it must be replaced.
PREPARATION

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PUTTING ON THE WEIGHT & TRIM III SYSTEM - HARNESS
• To don the Weight & Trim III System by yourself, rst check to be sure
that all of the weight pockets are properly closed. If the pockets are
not closed correctly, weights could fall out of the pocket and possibly
damage your equipment or injure other divers around you. The buck-
le at the waist must be open.
• Check to ensure Handle Pins are secure and locked.
• Set the Weight & Trim III System on the ground with the back of the
harness facing you with the waist buckle open.
• While standing with your arms straight at your sides, cross your
straight arms in front of you, so your hands are pointing toward the
ground.
• Maintain this position and bend down to grab the harness by the
shoulders.
• Lift the unit from the ground and, with caution, swing the unit to the
left or right and onto your shoulders.
• With the weight evenly distributed on each shoulder, fasten the waist
belt. The buckle does not need to be worn as snugly as a standard
weight belt. The shoulder straps support the weight and determine
the position of the belt.
• The operation of your buoyancy compensator should not interfere
with your Weight & Trim III System harness. Test the operation of
each piece of equipment prior to diving. In particular, you must be
able to drop your weights without any interference from your buoy-
ancy compensator or any other piece of equipment.
!! WARNING !!
Prior to diving with your Weight &Trim III System, put on the
Weight & Trim III System and your buoyancy compensator.
Check to be sure that each of these pieces of equipment operate
properly without interference from the other. You must be able to
ditch your weights quickly and easily. In particular, check to be
sure that you can operate the release cords on the
Weight &Trim III System without interference from your BC.
Do not dive with the system unless you are able to operate
the release handle properly.
PREPARATION

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The release handles on the Weight & Trim III System are made to accommodate
large hands wearing thick gloves. Given this, it is possible for a diver to incorrectly
pass the ends of the waist belt through the loops to “wire” the belt in a condition
where the weight pockets can only be released with great diculty. Even if the
weight pockets are released under these circumstances they will still hang from
the waist belt of the Weight & Trim III System. The weight pockets will then hang
between the diver’s legs. This situation can lead to entanglement, leg or foot in-
juries, and drowning.
!! WARNING !!
Never thread the waist belt through the weight release handles.
This makes the weight pockets difcult or impossible to release
and may lead to serious injury or death.
REMOVING THE WEIGHT & TRIM III SYSTEM
To remove the Weight & Trim III System open the waist belt and pass the right
hand under the right shoulder strap. The weight will now be supported on the left
shoulder. Grasp and hold the waist belt with the left hand and let the left shoulder
strap slide o the shoulder supporting the weight with the left hand.
PREPARATION

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DIVING WITH THE WEIGHT & TRIM III SYSTEM
Diving with the Weight & Trim III System requires little or no change from your nor-
mal diving pattern. However, you will immediately notice that diving is more com-
fortable and the Weight & Trim III System provides better trim. Take notice of how
your weights are riding on your body and do not hesitate to make adjustments
until you get it adjusted to the most comfortable position for you.
REMOVING YOUR WEIGHTS BEFORE EXITING THE WATER
When exiting the water onto a ladder or swim step it may be advantageous to
remove the weight pocket assemblies. You can hand them to someone or tie
them o so you may exit the water without the weight. To do this, simply grasp
the release handle and pull the assembly free, taking care not to drop it. Once the
assembly has been handed o, repeat the process with the remaining assembly.
Cross-releasing is releasing the right weight pocket assembly with the left hand
instead of the right hand. Cross-releasing can result in all the weight being on
one side of the diver, resulting in the diver being unbalanced, making it dicult to
maneuver and hand o or tie o the weight pocket assembly.
! CAUTION !
DUI advises against cross-releasing a weight pocket unless it is
absolutely necessary such as in an emergency.
DROPPING YOUR WEIGHTS IN AN EMERGENCY SITUATION
In certain diving emergency situations it may become necessary to drop all or part
of your weights to achieve positive buoyancy. This may occur due to the failure of
a buoyancy compensator.
If buoyancy has failed, it may be necessary to drop part or all of the weights to
achieve neutral or positive buoyancy. In fact, under certain situations, dropping all
of the weights may be very undesirable, due to the rapid ascent that will follow.
DIVING

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The Weight & Trim III System allows the experienced diver to make a judgment
regarding the removal of weight in an emergency situation. If it is not necessary to
drop all of the weight, the diver may selectively drop only half of his/her weights.
This may be all that is necessary to re-establish buoyancy control without the risk
of an overly rapid ascent. Since each diving emergency occurs under a dier-
ent set of circumstances and all divers have varying degrees of experience, DUI
cannot advise you when to drop all weights and when to drop half of the weights.
!! WARNING !!
Opening the waist belt buckle will not allow the diver to drop the
Weight &Trim III System. In all probability, the unit will still hang
by the shoulders or be trapped under the diver’s buoyancy
compensator device. To achieve positive buoyancy in an
emergency situation, the only sure method of dropping the
weights is to pull the release handles until weight pocket
assembly is completely free of the diver and then releasing it.
HOW TO RELEASE THE WEIGHTS
• To release half of your weights, place your thumb through the loop
of a weight release handle and grasp it, pulling the handle straight
out and away from your body. The hand used to release the weight
pocket assembly should be the hand closest to the assembly i.e.
right hand right assembly. Do not reach across your body to release
the weights from the opposite side unless it is absolutely necessary.
As soon as the weight assembly is free and clear of the body, drop it
by releasing the handle.
• Repeat on other side as necessary.
!! WARNING !!
Dropping all of your weights at one time can make you
excessively buoyant. We advise against dropping all of your
weights unless an immediate, rapid ascent to the surface is es-
sential. Rapid ascent is dangerous and may lead to air
embolism, decompression sickness,
or other lung over-pressure injuries.
DIVING

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MAINTENANCE OF YOUR WEIGHT & TRIM III SYSTEM
Proper maintenance of your Weight & Trim III System is very important. It is very
simple to care for and requires a minimum amount of attention.
POST DIVE CARE
• Rinse the entire system thoroughly with fresh water.
• Remove the weights from the pockets and ush the pockets with
fresh water. This will remove any sand or other matter that may have
accumulated in the pockets.
• Do not dry in direct sunlight.
• Do not store with the weights in the system.
• Store in a cool dry place.
REATTACHING WEIGHT POCKETS OF THE WEIGHT & TRIM III SYSTEM
If you have released the weights you will need to reattach them by engaging the
release handle before you can use the Weight & Trim III for diving again. This is a
very simple procedure that can be accomplished in a few seconds. There is a left
and right weight pocket assembly. They are not interchangeable.
To install the weight pockets perform these steps:
1. Insert P3 into P1/P2 Assembly
2. Insert Weight Release Handle (P4) through P1/P2/P3 Assembly, ensuring that
P4 snaps in securely. As seen in (Figure A)
Figure A
Pockets have been removed
from this illustration allowing
you to see the docking
mechanism
MAINTENANCE

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COMPLETE ASSEMBLY WITHOUT POCKETS
Pockets have been removed from the above illustrations
allowing you to see the docking mechanism
• You can change pocket size to t your needs and ability.
• The pockets should be changed if damaged in anyway, ripped, torn,
Velcro not functioning properly, etc.
• Change Weight Release if damaged or worn.
MAINTENANCE

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DIVING UNLIMITED INTERNATIONAL, INC.
LIMITED WARRANTY
DUI warrants that your DUI Weight & Trim III System will be free from defects in
material and workmanship for a period of one (1) year from the date of original
retail purchase with proof of purchase.
Any product determined by DUI to be defective in materials or workmanship in
accordance with the above warranty will be repaired or replaced at the option of
DUI, free of charge, when received at the factory freight prepaid, together with
proof of purchase. The warranty is not extended with the repair or replacement
of the item.
This warranty is expressly in lieu of all other warranties. Any implied warranties of
merchantability or tness for a particular purpose are limited to the same duration
as this express warranty. This warranty does not cover, and DUI shall not be liable
for incidental or consequential damages. Some states do not allow the exclusion
or limitation of implied warranties, incidental or consequential damages, so the
above limitations and exclusions may not apply to you.
This warranty does not cover fading or any damage resulting from misuse, abuse,
neglect, alteration, failure to perform maintenance as instructed, damage caused
by contaminants, or unauthorized repair or service.
This warranty does not cover any representation or warranty made by Dealers
beyond the provisions of this warranty.
This warranty does not cover costs incurred for normal repair, inspection and
preventive maintenance.
This warranty is a consumer warranty extended only to the original retail purchas-
er, and does not apply to units used for commercial purposes.
This warranty gives you specic legal rights, and you may also have other rights
which vary from state to state.
RETURNING YOUR DUI PRODUCT FOR SERVICE, CONTACT:
Diving Unlimited International, Inc.
1148 Delevan Drive
San Diego, CA 92102-2499 USA
800-325-8439 ~ 619-236-1203
619-237-0378 Fax
[email protected]
www.DiveDUI.com
WARRANTY

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ARE YOU A RESPONSIBLE DIVER?
RESPONSIBLE DIVER CODE
As a responsible diver, I understand and assume all the risks I may encounter while diving.
My responsible Diving Duties include:
1. Diving within the limits of my ability and training.
As a responsible Diver, I understand...
• My certication card qualies me to engage in diving activities consistent with
my training and experience.
• The importance of continuing my diving education in the form of supervised
activities and training, such as night diving and deep diving specialties.
• The need to keep procient in my diving skills and to refresh them under su-
pervision if I have not been diving recently.
• There are no limits to what I can learn about diving. The more I know, the safer
I’ll be.
• My maximum depth should be limited to my level of training and experience.
• I must have training in the proper use of equipment.
• The value of getting specic training in the proper use and application of spe-
cialized equipment, such as drysuits and computers.
2. Evaluating the conditions before every dive and making sure they t my personal capabil-
ities.
As a Responsible Diver, I recognize...
• The need for being familiar with my dive sites and the importance of getting a
formal orientation to unfamiliar dive sites from a knowledgeable local source.
• The dangers of overhead environments (caves, wrecks, etc.) and the need to
seek specialized training before doing such diving.
• I should postpone my dive, or choose an alternate site, if I evaluate the dive
site conditions as being more dicult than my experience and training level.
• I should use a surface support station, such as a boat or a oat, whenever
feasible.
RESPONSIBLE DIVER CODE

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3. Being familiar with and checking my equipment before and during every dive
As a Responsible Diver, I understand...
• That simply owning my equipment does not give me the knowledge and abil-
ity to dive safely.
• I must have training in the use of my equipment.
• I should maintain comfort in the use of my equipment through practice.
• My equipment must be equal to the type of diving I will be doing.
• I need to check that my equipment is operating properly before each dive.
• My equipment must be treated with respect and properly maintained and ser-
viced.
• My equipment must be serviced according to manufacturer’s specication by
a qualied service technician.
• I must follow manufacturers’ recommendations on the use of my equipment
and must not modify it to perform in a way not intended by its maker.
• I need to be properly trained before using EANx (Nitrox) or any special mixed
gases and must use proper designated equipment displaying the appropriate
markings.
• The importance of being able to easily release my weights if in distress.
• The value of an alternate air source and low pressure buoyancy control ina-
tion system.
• How to adjust my weights for neutral buoyancy at the surface with no air in my
buoyancy control device.
4. Respecting the buddy system and its advantages.
As a Responsible Diver, I recognize...
• I need to keep my diving emergency response skills sharp through practice
and mental role playing.
• The importance of planning my dives with my buddy, including communica-
tions procedures, for reuniting if separated and emergency procedures.
• Diving the plan which my buddy and I agreed to follow helps provide a safe
dive.
• I should always deny the use of my equipment to uncertied divers.
RESPONSIBLE DIVER CODE