top of page


Welcome future divers and underwater enthusiasts! We're thrilled to have you onboard as you embark on this fascinating journey into the world of scuba diving. To ensure you have the best experience and training, it's crucial to talk about the gear you'll be using. After all, having the right equipment is like having a trusty sidekick in your underwater adventures. So, let's dive into the world of scuba gear, making it easy to understand and, of course, fun!

Why Choose Minimalist and Standardized Gear?
Imagine this: You and your dive buddies are all geared up, ready to explore the underwater realm. Now, if everyone has a different setup, it’s like trying to solve a puzzle in a different language. Not fun, right? That's where the GUE Equipment Configuration comes in, ensuring that everyone is on the same page, making problem-solving a breeze, and preventing issues before they start.

Finding Your Perfect Gear: Recommended vs. Meets Requirements
“What gear do I need?” you might ask. The GUE Equipment Requirements are your go-to guide for this. Dive into the GUE Standards, find your class, and voila, you’ll see the “Additional Course-Specific Equipment” you need. And while there’s plenty of gear out there that meets our requirements, we’re all about helping you find the gear that does more than just tick the boxes—it enhances your learning and makes diving a joy.

Do I Need to Buy Everything New?
Nope! Many divers find that with a backplate, harness, and wing, they can adapt their existing gear. We’re here to guide you, recommending options that align with your goals and budget. And hey, in some places, you can even rent the gear you need. Just ask your instructor!

The Fabulous Five: Major Components of the GUE Equipment System
1. Backplate/Harness:  Think of this as your diving backbone—sturdy and dependable.
2. Wing:  This is your buoyancy buddy, and we prefer the single internal bladder type.
3. Regulators:  These are your breathing besties. We’re all about modern designs that steer clear of compact octos and “AIR2” styles.
4. Gauges:  Your underwater informants. Keep an eye on your depth and bottom time with these guys, preferably on your wrist or forearm. Depth gauges from Scubapro or Shearwater are great examples. 
5. Fins:  Your underwater propellers. Rigid, paddle-style, and no split fins, please! My Favorite are the Scubapro Jet Fins. 

Brand Specifics: It’s All About Features, Not Brands
With GUE, we’re not about pushing brands; we’re about finding gear that works with you. So, we’ll happily recommend brands and models with a solid track record of durability and design.

GUE Gear vs. DIR Gear: A Bit of History
The GUE Equipment Configuration was once known as the DIR Configuration. They’re like siblings with a few differences, but at the end of the day, GUE’s requirements are all about promoting team spirit and standardization.

Diving Deep: The Nitty-Gritty of Required Equipment
We’ve got a comprehensive list below, detailing everything from your mask to your fins, your buoyancy compensator to your thermal suit. And of course, all the bells and whistles in between. Check it out, and you’ll find out exactly what you need, why you need it, and how to choose the best options for your diving adventures.

Your HDI Diving Instructor: Your Equipment Guru
Have questions? Need recommendations? Your HDI Diving instructor is your go-to person for all things gear-related. They’re here to provide detailed, up-to-date info tailored to your goals and the specific GUE class you’re taking. Plus, they’re fantastic at helping you review potential purchases to ensure they meet class standards and are a smart investment.

So, there you have it—a whirlwind tour of the essential scuba diving gear for your GUE training. Remember, the right equipment is your ticket to safe, enjoyable, and utterly fascinating dives. Welcome to the tribe, and happy diving!

Halcyon Equipment Setup

1. Mask: Low-volume for reduced drag; easy to clear.
2. Mask Strap: Durable and strong.
3. Backup Mask: Matches primary mask quality; reliable. Required in most recreational classes except specific primers.
4. Primary Regulator: High-quality; downstream design; used in out-of-gas scenarios.
5. Long Hose: Essential for deeper or overhead environments; facilitates gas sharing; 5-7ft; placed on diver’s right post.
6. Backup Regulator: High-quality reserve; downstream design; not compact or integrated with BC inflator.
7. Short Hose: Comfortable breathing length without creating drag; commonly 22-24 inches.
8. Necklace: Holds backup regulator; customizable with bungee and zip tie.
9. Power Inflation LP Hose: Suitable length for easy use; prevents excess drag; commonly 22 inches.
10. Pressure Gauge Hose: Custom length; easy gauge reading without causing drag; commonly 24 inches.
11. Pressure Gauge (SPG): Reliable brass and glass; easy to read; 2-2.5 inch diameter face; not in a large console.
12. Harness and Backplate: Secure fit; reduces drag; rigid design; evenly distributes ballast. “Short” plate option for divers under 5’5”.
13. D-rings: Two chest D-rings for reduced drag; one hip D-ring for pressure gauge.
14. Crotch Strap: Custom fit; supports two D-rings; holds BC in position; prevents BC floatation.
15. Knife: Waist-mounted for easy access.
16. Buoyancy Compensator (Wing): Adjusted to diving conditions; streamlined; single bladder; left-hand side dump.
17. Corrugated Hose/Power Inflator: Correct length for functionality without entanglement; positioned over left shoulder; standard “K-style” preferred.
18. Bottom Timer/Depth Gauge: Wrist or forearm-mounted to reduce drag and entanglement.
19. Watch: Functional stopwatch; wrist-mounted.
20. Compass: Forearm-mounted; tilt tolerance; may be separate or integrated.
21. Wetnotes & Pencil: For dive planning and communication.
22. Surface Marker Buoy and Spool: Various sizes; 3ft/1m closed circuit preferred; stored for streamlining; 100-150ft line spool.
23. Fins: Rigid paddle blade; no split fins; attachment buckles replaced with durable connections; open-heel preferred.
24. Booties: Required for open-heel fins unless using a drysuit with incorporated boots.
25. Thermal Suit: Appropriate insulation; dry suit users require undergarments.
26. Hood: Necessary for alertness and comfort; recommended for all cave/overhead diving.
27. Clips: Various single-sided and double-ended boltsnaps; preference for high-quality stainless steel.
28. Pockets: For storage; mounted for streamlining; various attachment options.
29. Overboard Discharge (P-Valve): For urination during long dives; required with dry suit.
30. Knobs: Soft; fully openable.
31. Valve: Depends on environment and activity; dual orifice preferred for safety; specific requirements for singles and doubles.
32. Cylinders: Chosen based on environment, weight, and activity.
33. Backup Lights: TWO; shoulder-mounted; disposable batteries; twist activation; focused beam; required for various classes.
34. Primary Light Head: Hands-free Goodman handle; bright, focused beam; rechargeable battery.
35. Primary Light: Handheld or hip-mounted; rechargeable battery; focused beam; required for various classes.
36. Guideline Reel: Required for Cave and Tech; extra spool for Rec 2/Nav.
37. Safety Spool: 150ft spool for overhead environments; stored in pocket; required for cave/overhead classes.
38. *Additional Requirements: Specific to Tech/Cave/Rec 3/Triox classes; outlined by instructor or partner instructor. 

bottom of page