dry suit instructor guide scuba diving international

Transcription

1 dry suit instructor guide scuba diving international

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3 SDI Dry Suit Diving Instructor Guide Dry Suit SCUBA DIVING INTERNATIONAL 3

4 Disclaimer... All diving activities have inherent risks involved. Each individual diver engaging in any form of diving must accept the risks and accept responsibility for their own actions. The author and publisher assume no liability to anyone for loss, damage, injury or death caused by any error or omission in the work. Any and all such liability is disclaimed. The information in this manual pertains to dry suit diving, and is only to be used as a supplement to recognized training by a certified SDI Instructor. This manual cannot replace professional instruction and good judgment. 4

5 SDI Dry Suit Diving Instructor Guide SDI Dry Suit Diver Manual , International Training Notice of rights: All rights reserved. No part of this book may be reproduced or transmitted in any form by any means, electronic, mechanical, photocopying, recording, or otherwise without the prior written permission of the publisher. For information on getting permission for reprints and excerpts, contact International Training. Author: James A. Lapenta Executive Editor: Brian Carney Technical Editors and Contributors: Dennis Pulley, Lauren Kieren, Sean Harrison, Jon Kieren Art Director: Joe Coulas Design / illustrations: Rick Carlson Photography: YZin Kim, Leon Klaiman, Stefano Minella, Peter Lapin, Pete Nawrocky, Greg DeSatnick, Katy Frazer, Hollis, Otter, Rosemary E Lunn The Underwater Marketing Company, Dive Addicts, David Jativa Segarra, Jerry Henkins, Bill Downey, William Ruble, Drew LaPointe Trademarks Scuba Diving International, Technical Diving International, and Emergency Response Diving International are registered trademarks of International Training Product ID #: ISBN: v0315 5

6 Table of Contents... Introduction:...7 Chapter 1: Dry Suit Diving vs. Wet Suit Diving...12 Chapter 2: Types of Suits, Seals, and Choosing the Right One...14 Chapter 3: Undergarments and Options...18 Chapter 4: Getting Dressed...20 Chapter 5: Adding Equipment...22 Chapter 6: Weighting and Proper Trim...24 Chapter 7: Diving in a Dry Suit...26 Chapter 8: Emergency Procedures...28 Chapter 9: Dry Suit Care and Accessories...30 Chapter 10: Expand Your Diving Skills and Knowledge...32 Appendex:

7 SDI Dry Suit Diving Instructor Guide Introduction:... About This Instructor Guide This Instructor Guide (IG) is intended to assist the SDI Instructor in presenting the academic portion of this course. It closely follows the material in the student s SDI Dry Suit Diver Manual, and in the instructor s PowerPoint presentations. It also includes the answer keys for the Scuba IQ Reviews, or Knowledge Quests (KQ s) for each of the nine chapters. General Notes At the beginning of this course, it is important to make sure that the course fees have been collected from each student, and have each student complete the appropriate forms outlined in the SDI Dry Suit Diver course Standards and Procedures. The instructor should review these forms, to ensure they are properly completed; as a reminder, any yes listed on the medical statement form will require a licensed physician s approval for diving activities prior to any in-water course activities. This is also the ideal time to complete any additional paperwork that an individual instructor or local dive center might require. Next, course participants, the instructor(s), additional staff, if any, and the students should be introduced. Once this is complete, give a brief introduction of International Training and its three certification agencies: SDI, TDI, and ERDI. Finally outline the course itself. It is important to ensure that each participant clearly understands all requirements and expectations related to the program. Some of the information included here is intentionally brief. Naturally, this information should be supplemented by the instructor with additional details related to class dates, arrangements for the open water dives, any equipment the student will be required to bring, rent, or purchase and any additional fees or expenses that should be anticipated. 7

8 Introduction Paperwork: SDI Liability Release and Express Assumption of Risk Form SDI Medical Statement Form About International Training SDI-TDI-ERDI SDI: Scuba Diving International TDI: Technical Diving International ERDI: Emergency Response Diving International About this Program Course Objectives and Subject Areas Dry Suit Diving vs. Wet Suit Diving? When a Dry Suit is Appropriate Types of Suits, Seals, and Choosing the Right One Undergarments and Options Getting Dressed Adding Scuba Equipment Weighting and Proper Trim Diving in a Dry Suit Emergency Procedures Dry Suit Care and Accessories Expand Expand Your Diving Skills and Knowledge! Training Sessions for the SDI Dry Suit Diver Course It is important to point out that this specialty course is addressed in the instructor support materials, as well as in the student manual: SDI Dry Suit Diver The information in the manual and support materials is presented in a carefully integrated and progressive format; for example, the manual and materials first address the various conditions requiring a dry suit, the types of suits, and then the use of them. Because of this integrated and progressive format, it is important that each student carefully reviews the entire SDI student manual or online materials, and that the instructor always conducts the complete presentation as outlined in the Instructor Guide. The student will read the manual and submit a completed Knowledge Quest workbook or elearning progress report, attend one complete academic presentation by the instructor, and then participate in a minimum of 2 open water dives with the instructor. 8

9 SDI Dry Suit Diving Instructor Guide Additional copies of the Knowledge Quest (KQ) workbook can be obtained, when needed, from your SDI Regional Office Academic Presentation The information in the Instructor Guide is presented in an outline format, identifying the key points that should be addressed by the instructor during the classroom presentation. Naturally the instructor will do well to elaborate upon this information, as appropriate, including examples specific to the local diving environment. During the classroom presentation the instructor also is encouraged to have various equipment items available, as training aids, so that the students may handle and become familiar with the specialized equipment that will be used later in their open water dives. A recommended list of items includes: Dry Suit Undergarments Gloves Hood (s) BCD Regulator Weighting systems Lift bag, DSMB, or SMB Cleaning supplies/seal saver Talc or lubricant Zipper wax as required Confined/Open Water Dives The following information is intended as an overview only, and instructors are directed to the current SDI Standards and Procedures for the required list of skills to complete. Although a confined water session is not required, it is highly recommended. During the confined water session students will establish weighting and proper trim, inflation and deflation of the dry suit, emergency recovery procedures for feet first ascent, rapid ascent, stuck inflator, stuck deflator and any other skills as directed by the instructor. During the open water dives students will perform all skills from the confined water sessions while maintaining proper buddy position and following agreed upon dive plans. 9

10 Introduction Developing Your Skills During this course, you will learn to: Determine when a dry suit is called for Choose a dry suit system Don a dry suit and properly fit it to you Combine a dry suit with scuba equipment Determine your weighting and use proper trim Respond to emergency situations Care for the suit Plan and perform dives in a dry suit In Order to Complete this Course, Students Must: Satisfactorily complete the SDI Dry Suit Diver Knowledge Quest with a minimum score of 80%, followed by 100% remediation by the SDI Dry Suit Diver Instructor. Perform all land, pre-dive, and in-water, and post-dive requirements correctly and efficiently. Demonstrate mature, sound judgment concerning dive planning and execution. Maintain an appropriate level of awareness and respect for the environment Log all training dives. Marketing This Program While discussing these specialty programs with any potential student, it is helpful to focus upon the benefits. During entry-level training, every student is introduced to the basic principles of diving and using proper exposure protection. Yet many divers lack confidence in their ability to successfully choose a dry suit and use it on their own. The SDI Dry Suit Diver course reinforces the principles of using proper exposure protection that will allow them to extend their diving season. As a result of this training, the diver will be better able to: Choose a dry suit Use it efficiently Extend their diving range and comfort while diving in cooler or cold water 10

11 SDI Dry Suit Diving Instructor Guide The inexperienced diver might wonder why anyone would want to dive in cold water, and might even sense some apprehension at the very thought of diving in it. In many locations, the underwater world is quite different when the water cools and, once that world is explored, cold water diving quickly becomes a favorite for many divers. Here are some key points to consider: The visibility may increase They will be warmer They will not be as cold on the surface The diver will observe different activity Winter no longer marks the end of a season s diving if properly equipped 11

12 Chapter 1: Dry Suit Diving vs. Wet Suit Diving Chapter 1: Dry Suit Diving vs. Wet Suit Diving When a Dry Suit is Appropriate... Instructor Notes This chapter will introduce participants to what dry suit diving is and reasons to dive dry vs. wet. This is a great time to discuss each participant s motivation and goals for becoming a dry suit diver. Topics in this chapter: Temperature, Depth, Duration, Personal Tolerance to Cold Temperature Suit Thickness/Types and Charts Depth and Thermoclines Length of Dives Surface Intervals Personal Tolerance to Cold Exertion Hypothermia/Hyperthermia Temperature, Depth, Duration, Personal Tolerance to Cold Water temperature Air temperature Sites that get colder the deeper you go Rate of which water conducts heat away from your body Personal tolerance Temperature Underwater and surface considerations Suit Thickness/Types and Charts Charts are guidelines Find what works best for you 12

13 SDI Dry Suit Diving Instructor Guide Depth and Thermoclines Gradual drop Sudden drop Still water Dressing for the coldest part Length of Dives Longer the dive = more heat lost by diver Surface Intervals Diving wet cooler on the surface Diving dry warmer on the surface Required surface intervals between dives should not be cut short Personal Tolerance to Cold Each person tolerates cold differently Metabolism rates Age Weight Physical condition Percentage of body fat Exertion Level of exertion Hypothermia/Hyperthermia Hypothermia = lowering of the body s core temperature Hyperthermia = Body s temperature rising to dangerously high levels Signs and symptoms Each is a medical emergency requiring professional intervention 13

14 Chapter 2: Types of Suits, Seals, and Choosing the Right One Chapter 2: Types of Suits, Seals, and Choosing the Right One... Topics in this Chapter: Laminated Suits Neoprene/Crushed Neoprene Suits Vulcanized Rubber Suits Latex Seals Neoprene Seals Silicone Seals Boots vs. Socks Options Zipper Placement Pockets Gloves Hoods Pee Valves Budget New vs. Used Laminated Suits Bi-Lam Tri-Lam Skin over suit Flexibility Sizes Custom suits Seams Abrasion resistance 14

15 SDI Dry Suit Diving Instructor Guide Neoprene Suits Neoprene Crushed neoprene Inherent insulation properties Toughness Flexibility Weight Drying time Buoyancy Vulcanized Rubber Commercial and contaminated water use Decontamination and cleaning Warmth Weight Size limitations Cost Seals Latex, Neoprene, Silicone Latex Styles Sizes Grade Resistance to damage Mixing and matching Trimming Latex Styles (cone vs. bottle) Thicknesses Fit Neoprene Grades Thicknesses Warmth Ruggedness Replacement Fit concerns 15

16 Chapter 2: Types of Suits, Seals, and Choosing the Right One Silicone Fit Styles Colors Sizes Attachment systems Replacement Durability Boots - Integrated vs. Socks Socks Foot wear choices Air flow restriction Remembering to pack them Integrated boots Grades Tread Thickness Attachment and replacement concerns Ankle straps and gaiters Options: Front or Back Zip, Pockets, Gloves, Hoods, Placement of Dump Valves, and Pee valves. Zipper placement - Front - Rear - Diagonal - Horizontal - Buddy assistance - Relief zippers Zipper Material - Brass - Plastic 16

17 SDI Dry Suit Diving Instructor Guide Pockets - Style - Zipper - Velcro flap - Built in d ring - Use of loop of bungee or shock cord - Position Gloves - Wet vs. dry - Thickness of wet gloves - Dry glove systems - Attachment systems - Equalizing the gloves Hoods - Thickness - Zippered or un-zippered - Face seal thickness - Fit - Cautions for carotid sinus reflex Dump valves - Dry suit - Placement shoulder vs. cuff - Operation - Manual vs. automatic Pee valves male and female - Attachment - Balanced vs. unbalanced - Grooming concerns Budget Considerations - New vs. used - Possible problems - Benefits of new 17

18 Chapter 3: Undergarments and Options Chapter 3: Undergarments and Options... Topics in this Chapter: Materials Layering Dry Suit Specific or Adapted From Other Sports Socks Heated Undergarments Materials Early options wool, cotton Evolution to other materials Wool Synthetics Fleece Wicking importance Why cotton is avoided Layering Material plus air = warmer Warming vs. slowing heat loss You still get cold, it just takes longer Base layer Layering for the feet Dry Suit Specific or Adapted From Other Sports Comfort Budget Other cold weather activities whose gear may be used Fit Style Insulating properties Mixing and matching Caution against loose material 18

19 SDI Dry Suit Diving Instructor Guide Socks Condensation and gravity Layering Using outside materials to further protect Rock boots and neoprene socks vs. integrated boots Heated Undergarments Options Types Suit installation concerns Battery pack size Expense 19

20 Chapter 4: Getting Dressed Chapter 4: Getting Dressed... Topics in this Chapter: Proper Fit Donning the Dry Suit Talc or Lube Checking Seal Fit and Trimming Zipping Up Proper Fit Wet suit vs. dry suit Air vs. water for insulation Avoiding squeeze Ability to layer undergarments Importance of not restricting movement Danger of too loose a fit trapping air, runaway ascent Manufacturer s measuring guidelines Assistance with measuring Personal comfort Placement of pockets, zippers Telescoping torso or not? Benefits of telescoping torso Donning the Dry Suit Concerns Zipper open all the way Legs first Pee valve plumbing and hooking it up Suspenders Removal of jewelry Donning the arms Use of lubricants Donning over your head Seal position - smooth and flat against the skin Buddy verification of seal fit 20

21 SDI Dry Suit Diving Instructor Guide Closing the zipper solo and with a buddy Purging the suit Talc or Lube? Why Talc types Applying talc methods Concerns messy, respiratory issues Personal lubricant Water based Advantages over talc Use for some gloves Benefit from donning the seals effort point of view Manufacturer s recommendations Checking Seal Fit Why it s important Check before trimming How to trim Checking fit before trimming too much Blood flow Neck seal fitting and trimming should be done with another person present Caution fitting neck seal Neoprene seal trimming and fitting Stretching neoprene seals Lube to remove them Loosening over time Zipping Up - Self Zip vs. Buddy Assist What it results in micro climate Zipper closure don t force it Dangers of not having the zipper fully closed Assistance of a buddy Verification 21

22 Chapter 5: Adding Scuba Equipment Chapter 5: Adding SCUBA Equipment... Topics in this Chapter: BCD Selection Weighting Systems Regulator Configuration Suit Bottle Option Checklists and Suiting Up BCD Selection Jacket, back inflate, back plate and wing Travel BCD concerns Required lift Adjustment for added bulk Air distribution Integrated weight concerns Air flow restriction in suit from inflated BC Why back inflates and BPW s may be better choices Myths about back inflate BCD s Weighting advantages and customization Weighting Systems Required amounts vs. wet Use of multiple systems recommended Options BCD s, belts, plates, ankle weights, harnesses, cylinder weights, v weights Distribution strategies Calculating loss of weight and effect on buoyancy Overloading any one system 22

23 SDI Dry Suit Diving Instructor Guide Regulator Configuration Sealed regulators Number of ports Adding the dry suit hose Hose routing Hose length Suit Bottle Option Size Air Argon Marking Cautions Regulator choice Having a backup on the primary regulator Checklists and Suiting Up What is a checklist What to put on it Benefits 23

24 Chapter 6: Weighting and Proper Trim Chapter 6: Weighting and Proper Trim... Topics in this Chapter: Confined Water Checks Weight Placement and Distribution Ditch-able Weight Confined Water Checks Why it is critical Importance of not being over weighted Estimating vs. actual determination Start low and work up Making sure the suit is purged Feeling the squeeze for the first time Adding the scuba unit and rechecking Using both the BCD and dry suit inflator- why it s important Small bursts vs. long ones Tuning for trim with your instructor It is not task overloading for a new dry suit diver Full cylinder vs. partial cylinder check Alternate methods weighing your equipment in the water, using the prepared charts/programs Weight Placement and Distribution Why it s necessary Benefits Doing it while in the pool with assistance from the instructor Position of hands and feet have an effect Benefits Ditch-able Weight When to ditch Rarely necessary to drop all Dangers of dropping weight at depth Why a system that drops all is not necessary and may be overly dangerous 24

25 SDI Dry Suit Diving Instructor Guide Accidental loss of weights due to overloaded system Once you start up you ll continue to do so Increased buoyancy from dropping or loss of weights High percentage of total weight loss/ditching dangers Calculating how to distribute between systems 25

26 Chapter 7: Diving in a Dry Suit Chapter 7: Diving in a Dry Suit... Topics in this Chapter: Descending and Ascendin Your Dry Suit is Not Your BCD Adding Air Suit vs. BCD Dumping Air Suit vs. BCD Managing the Bubble Descending and Ascending Boyles law review Archimedes principle review Combining the two for dry suit use Suit squeeze Dangers of suit squeeze Items that have an effect on squeeze Your Dry Suit is Not Your BCD! Dry suit vs. BCD use both Enough air to offset squeeze but still sinking The larger the bubble the harder to manage it Large bubble in an ill-fitting suit It s not beyond the ability of the average diver to use both Why it may be safer to use both Muscle memory and the use of the BCD in an emergency Dry suit and undergarment evolution warmer with less air and less room for excess Adding Air - Suit vs. BCD Use what works best for you Experimenting with both Short controlled bursts Allow the air to expand Steel cylinders, BPW s, and other tech equipment with a dry suit We don t underestimate the intelligence and ability of the diver 26

27 SDI Dry Suit Diving Instructor Guide Dumping Air Suit vs. BCD Using the manual and automatic options Dry suit and BCD combined Position for effective venting Minimizing squeeze when venting Small controlled bursts to vent Managing the Bubble Posture and Positioning What is the bubble Why a large one is not desirable Keeping it distributed throughout the suit Good trim is necessary Posture under water Developed over time but can be effectively learned in this class 27

28 Chapter 8: Emergency Procedures Chapter 8: Emergency Procedures... Topics in this Chapter: Feet First Ascents Rapid Ascents Stuck Inflator Deflator Failure Flooded Dry Suit Back Up Buoyancy Feet First Ascents Concern of new dry suit divers Anecdotal accounts Potentially dangerous Rapid ascent/lung overexpansion Keep breathing Grab onto something Tuck and roll Kick down hard and swoop Whichever works at the time Make use of your buddy Rapid Ascents Prevention is key Proper weighting Ascent and descent lines Control adding air Breathe! Vent from suit and BCD Flaring Once on the surface drop weights Use your buddy if they are not put at risk 28

29 SDI Dry Suit Diving Instructor Guide Stuck Inflator Keep it clean and operating Check before the dive Use small controlled bursts to avoid freezing in very cold water Disconnecting the inflator Ending the dive Back up hose or not? Can you use the BCD inflator hose Drop your weights on the surface and inflate the BCD Keep your buddy close Don t dive until serviced Deflator Failure Vent via wrist seal Vent via neck seal Less air in the suit less to vent use the BCD and suit Drop your weights on the surface Keep buddy close Don t dive until serviced Flooded Dry Suit Causes Buoyancy not as big a concern as hypothermia Exiting the water with a flooded suit Get help if necessary Doff the suit and get dry and warm fast Do not remove scuba unit, mask, and fins until on boat or shore. Keep the regultor in your mouth! Back Up Buoyancy Dual bladder BCD (wing) Lift bag SMB/DSMB Using these items for back up buoyancy tips Recommended lift Training in the use of them Not just for tech divers! 29

30 Chapter 9: Dry Suit Care and Accessories Chapter 9: Dry Suit Care and Accessories... Topics in this chapter General Tips for Seals Zipper Lubrication and Cleaning Inspection Procedures Manufacturer s Guidelines Repair of Minor Leaks Freshwater Rinse Drying the Suit Before Storage Avoiding Contact with Heat and Chemicals General Tips for Seals Inspection what to look for and how Cleaning No harsh chemicals Rinsing and drying Treating for storage manufacturer recommendations Don t overdo it with treatments Zipper Lubrication and Cleaning Expensive to replace Key component Rugged yet subject to damage from abuse and neglect Cleaning Inspecting teeth, fraying, alignment, debris Lubrication follow the manufacturer s guidelines Inspection Procedures Time is necessary More than a wet suit Checklist will help greatly see sample in text Your own may be longer and more detailed 30

31 SDI Dry Suit Diving Instructor Guide Manufacturer s Guidelines Know them Use them Follow them Not doing so may void any warranty Repair of Minor Leaks Self-evaluation of your skills is required Do it Yourself (DIY) or professional only repair Failure can be dangerous even fatal Small cuts and tears with AquasealTM Silicone seals easy to replace Others require solvents and adhesives that may be dangerous Evaluate on case by case basis Will Do it Yourself (DIY) cause more damage or void warranty must consider Consult instructor, facility, and or manufacturer Freshwater Rinse Fresh running water is the key Inside and outside? Inside rinse Outer shell rinse Hanging or lying flat Drying the Suit before Storage Depends on type Out of direct sun No excessive heat Shaded deck or porch Upside down or right side up did you rinse the inside? Custom drying hangers and racks Using wader hangers Once dry store according to the manufacturer s guidelines and recommendations Avoiding Contact with Heat and Chemicals Excessive heat is bad for all equipment Don t store/dry next to the furnace or in direct sun Garage can be bad if fuels, solvents, and other chemicals are stored there also Choose a storage location with care 31

32 Chapter 10: Expanding Your Diving Capabilities Chapter 10 Expand your diving skills and knowledge!... Nitrox Diving You ll learn to use a breathing gas containing more oxygen and less nitrogen than air You will reduce nitrogen uptake during a dive You ll be able to enjoy extended bottom times without decompression requiments Your training will focus on nitrox dive computers And you ll be ready for a range of nitrox blends containing up to 40% oxygen Deep Diving You will learn to plan and conduct dives to the sport diving limit of 40 metres / 130 feet You ll understand the precautions and special procedures appropriate for these depths You will explore new equipment considerations And you ll gain practical deep diving experience under the guidance of your instructor Computer Diving You will find that there is a lot more to these instruments than just monitoring your dive You ll gain a deeper appreciation for how dive computers work You will learn to maximize the benefits of the dive planning and logbook funtions And you ll understand why different computers may provide varying profiles for the same dive Boat Diving When diving from boats you can enjoy sites not otherwise accessible from shore You ll learn about diving from different types of boats, with appropriate entrie and exits You will understand how to properly organize your equipment and where to stow it onboard You ll also learn appropriate dive boat etiquette 32

33 SDI Dry Suit Diving Instructor Guide Wreck Diving Exploring a wreck may quickly become your favorite underwater activity You ll learn about specialized dive techniques, and how to avoid the hazards You ll explore appropriate equipment configurations You will understand the layout of a wreck site and learn how to research a wreck s history Rescue Diving Though rare, sometimes accidents happen You will learn the appropriate emergency procedures to assist a diver in distress You ll also hone important self-rescue skills And, if you want to further your diving career, you will be meeting an important prerequisite for Divemaster, Assistant Instructor and Instructor Training The TDI Technical Diving Programs Here you gain the knowledge and skills that take you beyond traditional sport diving Your technical diving interests may include: -Higher nitrox mixtures - Alternate gases - Decompression procedures - Extended range - Overhead environments - And more! 33

34 Appendix: Knowledge Quest and Answer Key Knowledge Quest and Answer Key... Review Questions: Chapter 1 1. Choosing a dry suit is partially based on the of the water. A. Visibility B. Temperature C. Depth D. Both B and C Temperature and depth are both correct since depth can have a direct effect on temperature. 2. Deep dives can be,, and require more exposure protection. A. Colder/longer B. Colder/lighter C. Shorter/warmer D. Shorter/more tiring A. is the most correct answer when considering factors for using a dry suit. 3. A chart will give you guidelines for choosing the proper exposure protection. A. General B. Precise C. Individualized D. Tested A. General, since the charts are not based on actual tests with every possible persons own characteristics. 34

35 SDI Dry Suit Diving Instructor Guide 4. Hypothermia means that you are and need to. A. Cold/warm up B. Warm/cool down C. Cool/warm D. Warm/get warmer Hypothermia is the lowering of body core temperature which must be raised. 5. Hyperthermia can lead to. A. Heat stroke, B. Death, C. Organ failure, D. All of the above When the body loses the ability to cool itself there exists the possibility of serious damage to internal organs and death as a result of organ failure. 35

36 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 2 1. A suit may be better suited for conditions that may not demand high resistance to abrasion and punctures but require quick drying. A. Neoprene B. Vulcanized rubber C. Laminated D. Hybrid Laminated suits are not as rugged as neoprene or crushed neoprene. They do however, tend to dry quicker. 2. There are five types of material used for dry suit seals. A. True B. False There is actually three types that are the most common latex, silicone, and neoprene 3. Neoprene socks require the diver to use. A. Boots B. Insulating socks C. Custom insoles for use in water D. Both A and B Neoprene socks on a dry suit still require insulation and an outer boot to avoid damaging them. 36

37 SDI Dry Suit Diving Instructor Guide 4. gloves may require a special attachment method to be used. A. Warm B. Rubber C. Dry D. Wet Dry gloves often require a ring type system be installed on the arms of the suit to allow for sealing the hands. While some do not, ring style systems are still the most common as they allow for quick removal and attachment of the gloves. 5. are found on all drysuits and require careful maintenance and frequent inspection to ensure safe operation as well as dry conditions. A. Waterproof zippers B. Deflator valves C. Inflators D. All of the above Each is a critical component of a dry suit used for scuba. 6. A used suit can actually more than a new one. A. Fit better B. Cost more C. Be drier D. Be more flexible Repairs, modifications, shipping can all increase the cost of a used suit beyond that of a new one. 37

38 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 3 1. A layered undergarment system is better suited for cold conditions than one thick suit. A. True B. False Layered clothing is almost always preferred for warmth due to the combination of material and air layers providing insulation. 2. You should never use undergarments not specifically made for dry suits use. A.True B. False Undergarments that have all the required characteristics for dry suit use, that are also used for other cold weather activities, are acceptable for dry suit use. 3. Layering uses and to create an insulating layer inside a dry suit. A. Material, air B. Air, water C. Air, wool D. All of these Layering makes use of the insulation properties of air and the materials in the undergarments to slow heat loss. 38

39 SDI Dry Suit Diving Instructor Guide 4. A(n) system requires thought, experience, and good guidance. A. Waterproof B. Insulating B. Dry D. Custom Selecting the most effective system is a combination of factors. All of which share equal importance. Get one wrong and the whole system may not be as effective. 5. A vest is now an option for dry suit divers. A. Heated B. Heat reflecting C. Thick D. All of the above Battery powered heated vests are used by many divers, in very cold water, or by those with less tolerance to cold. 39

40 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 4 1. A dry suit will be fitted than a wetsuit. A. The same B. Differently C. Tighter D. Looser A dry suit requires different measurements and needs to provide for the movement of air with the addition of undergarments through the suit. 2. Your dry suit seals should fit yet. A. Snugly/comfortably B. Tight/waterproof C. Loosely/warmly We need to keep water out while allowing for adequate blood circulation and breathing in the case of the neck seal. 3. Lubrication of seals can be done with or. A. Water/ Vaseline B. Talc/ lubricant C. Flour/WD40 All of these petroleum based products should be avoided and talc and personal lube are less likely to cause friction that can damage seals. 40

41 SDI Dry Suit Diving Instructor Guide 4. A seal system can be stretched over a scuba cylinder to it. A. Latex/trim B. Neoprene/adjust C. Silicone/cut Neoprene seals are sometimes stretched in this manner to enlarge them as they will hold the new size. 5. A is a (an) part of the dry suit. A. Zipper/critical B Zipper/expensive C. Zipper/less important D. Both A and B are correct Zippers are expensive items to replace and they are a critical part of the suit. If the zipper fails the suit is no longer waterproof. 41

42 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 5 1. A dry suit requires the use of a special type of BCD for dry suit diving. A. True B. False Provided the BCD fits properly, and has enough lift, any standard BCD can be used with a dry suit. 2. Your dry suit regulator should allow for the of a (an). A. Installation/dry suit inflator hose B. Addition/SPG C. Removal/BCD inflator hose A Dry suit requires an additional inflator hose to add air to the suit as needed. 3. Dry suits can be inflated with air from the main cylinder or a. A. Deco bottle B. Stage bottle C. Suit bottle D. Orally Normally they are inflated from the main cylinder or suit bottle, stage and deco cylinders usually do not have an additional inflator hose attached to them. 4. A system can be used to a dry suit. A. Suit bottle/inflate B. Oral inflator/inflate C. Argon regulator/adjust Suit bottle systems provide an alternate inflation system that does not use the divers back gas for the suit. 42

43 SDI Dry Suit Diving Instructor Guide 5. A is a (an) part of diving dry. A. Checklist/unimportant B. Checklist/highly recommended C. Slate/critical D. Both A and B are correct Checklists have long been the tool of technical divers. Adopting them for sport diving use is smart and increases safety. 43

44 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 6 1. A dry suit does not require the use of a special type of weight system for dry suit diving. A. True B. False Any weight system used for wet suit diving can be used for dry suit diving, provided it has the necessary capacity. 2. Proper weighting is necessary for and. A. Safety/comfort B. Safety/to save money C. Safety/good trim D. Both A and C are correct Too little weight means the diver may need to struggle to get under and then not be able to hold a safety or deco stop. Too much weight means that more air must be used in the suit/bcd resulting in a larger bubble to manage. 3. Weight placement and have a large effect on trim. A. Amount B. Posture C. Type D. Both a and b are correct The amount of weight used, coupled with placement of it, and the posture of the diver in the water, all have a large effect on trim. Weights in the right place, and in the proper amount, can be negated by poor posture on the part of the diver. 44

45 SDI Dry Suit Diving Instructor Guide 4. A weight system must allow the diver to the weights. A. Ditchable/distribute B. Proper/secure C. New/dump all D. None of the above We rarely need to dump all weights except at the surface. Doing so could result in a dangerous ascent rate. We need to be able to position those weights so that only dumping what we need to ditch is possible. 5. A diver should use whatever system allows them to achieve safe weight distribution. A. Dry suit/weight B. Properly weighted/weight distribution C. Over weighted/weight D. Both A and B are correct Dry suit divers (all divers actually) should never be over weighted. Over weighting is a large contributor to accidents that involve a rapid ascent. 6. (optional) A diver requires 14 kilos / 30lbs of ballast. Their BCD will hold 2.25 kilos / 5 lbs in each trim pocket, 5 kilos / 10 lbs. in each integrated pocket, but they want to use a weight belt to distribute the weight and in an emergency drop the belt. Which option is preferable? A kilos / 5 lbs in each trim, 2.7 kilos / 6 lbs in each pocket, 3.6 kilos / 8 lbs on the belt B kilos / 5 lbs in each trim, 1.8 kilos / 4 lbs in each pocket, and 5.5 kilos / 12 lbs on the belt C. 1.8 kilos / 4 lbs in each trim, 3.6 kilos / 8 lbs in each pocket, and 6.4 kilos / 14 lbs on the belt. (a) is more proportional and offers the least risk of uncontrolled ascent due to loss of pocket or belt 45

46 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 7 1. Law explains the relationship between pressure and volume. A. Archimedes/direct B. Boyle s/inverse C. Dalton s/proportional D. Boyle s/direct Boyle s law explains the relationship between pressure and volume by stating that as pressure increases, volume decreases. 2. Venting air is necessary for and. A. Safety/comfort B. Safety/to save money C. Safety/good trim D. Both A and C are correct Venting air as required helps to control where the air is located and how much is contained in the suit. 3. The amount of air in the dry suit should be at all times by the diver. A. Measured B. Monitored C. Controlled D. reased E. Both B and C are correct Dry suit divers should be fully aware, at all times, of the amount of air in the suit and be fully in control of it for safety. 46

47 SDI Dry Suit Diving Instructor Guide 4. A position allows the diver to effectively manage the bubble. A. Horizontal B. Vertical C. Head down D. None of the above A horizontal position allows a diver to more effectively manage the bubble by keeping it distributed throughout the suit. 5. diver should use whatever system allows them to achieve good trim and in-water efficiency. A. Dry suit/buoyancy control B Properly weighted/buoyancy control B. Over weighted/inflation D. Both A and B are correct Whether diving dry or wet, proper weight distribution helps to ensure that safety and good trim are the results for the skilled diver effectively using them. 47

48 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 8 1. ascents are possible due to entering the feet or boots of the dry suit. A. Feet first/water B. Feet first /helium C. Feet first /air Air moving to the feet can cause a diver to turn upside down and begin a rapid ascent with difficulty in venting that air. 2. Feet first ascents can be dealt with by and. A. Tucking/rolling B. Swimming down hard/swooping C. Grabbing something/hanging on D. All of the above Each technique can be effective in stopping or slowing an ascent. 3. Dry suit inflators do not fail like BCD inflators. A. True B. False Dry suit inflators can fail open necessitating disconnecting them from the suit to avoid over inflation. 48

49 SDI Dry Suit Diving Instructor Guide 4. A deflator can cause a ascent. A. Failed/rapid B. Stuck/slow C. Clogged/impossible D. None of the above Not being able to vent the suit can result in an uncontrollably large bubble of expanding air in the suit. 5. can be used as back up buoyancy. A. Dual bladder wing B. Lift bag C. Pony bottle D. Both A and B are correct Both items provide backup buoyancy in the event of a suit or BCD failure. 49

50 Appendix: Knowledge Quest and Answer Key Review Questions: Chapter 9 1. require care and inspection before each dive. A. Seals B. Seams C. Zippers D. All of the above Suits and all other equipment must be thoroughly inspected before each dive to ensure safety and proper operation. 2. Zippers are the most part of a dry suit and to repair. A. Expensive/difficult B. Cheapest/easy C. Cheapest/hardest D. Both A and C are correct Zippers are perhaps the most expensive item on a dry suit and require training to replace. They are not normally a do it yourself (DIY) project and as such need to well cared for by inspecting, cleaning, and lubricating them. 3. Checklists do not really aid the dry suit diver when caring for the suit. A. True B. False Checklists work! They ensure nothing is missed, guide in performing cleaning and maintenance in the proper order, and are easy to create. 50

51 SDI Dry Suit Diving Instructor Guide 4. A repair is possible for some divers and not for others. A. Major B. Minor C. Warranty D. Both A and B are correct Repairs need to be evaluated on a case by case basis along with an honest self-evaluation of the diver s abilities to perform them. 5. A dry suit should be for storage according to. A. Prepared/manufacturer recommendations B Rolled/where it will fit C. Cleaned/manufacturer recommendations D. Both A and C are correct It is always wise to follow the manufacturer s recommendations to avoid damage to the suit when storing it or preparing it for storage. 51

52 *420011* ISBN: ###-#-######-###-# *220114* ISBN: INTERNATIONAL TRAINING INC