Signature Scuba

Signature Scuba Signature Scuba Diving is a scuba school & dive shop. We offer a range of courses & dive 🌎. Come by! Scuba diving provides a fantasy like experience!
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Our company is committed to teaching safe diving courses that gets you and your friends and family certified for open-water diving! Our shop also offers all the gear you need to get started or to advance your snorkel or diving career! The following information is designed to help you determine the cost and time commitment required to learn how to SCUBA dive:

OPEN WATER CERTIFICATION COURSE TUITIO

N STARTING AS LOW AS $199.00

The course includes academics, skill practice in confined water and actual scuba diving in open water, all under the guidance of a PADI Instructor. Confined water training options may include group or private instruction. Your open water training dives might be conducted locally. You’ll have fun learning to safely, comfortably explore the underwater world. Virtually anyone in good health who’s reasonably fit and comfortable in the water can learn to scuba dive. Participants as young as 8 to 10 CAN DO SCUBA SEAL, 10 years to 14 years of age can do Junior open water and 15 years and up may take the Open water course.

*Group Course Instruction Tuition Cost = $199.00 (Price subject to change without notice.) Class size limited to 8 students, with average size of classes being 4 to 6 students. Includes:
1) 3 Classroom Sessions
2) Five Pool DIVE Sessions
3) Four Open Water Dives (**Usually in Catalina). Additional Costs:
Basic Equipment: You must own your own personal Dive Mask, Snorkel, Dive Fins, Booties, Wetsuit, Hood & Dive Gloves. SignatureScuba has student basic equipment packages, without wetsuit and hood starting at 189.00 + tax This gives you the best value for the lowest cost. Comfort and fit of equipment should determine your choice in basic equipment, however, not price. Certification Requirements:
Course Materials from $69.00+tax. PADI Certification Card = $30.00+tax. PADI requires you to purchase a class Video or DVD for $24.99

Equipment Rental For the Confined and Open Water Dives:
Tanks, Regulator, BCD, Weights & Compass. Student Rate = $69.00+tax for the entire week-end! Open Water Session Travel Expenses:
Catalina Express if applicable, Lodging for one week-end depending on dive location. You will be responsible for your own Dining Expense, Parking Fees (Approximately $10) and Air Fills
(Approximately $24). Monthly Course Schedules:
Each Course begins with an hour of orientation usually scheduled on Wednesday night at 7 PM lasting approximately one hour. During the orientation you will fill out health forms, pick up your study materials to work on at home at your leisure, and get any last minute questions you may have answered. Currently, Signature Scuba is offering Week-End Courses that begin either Friday evening or Saturday morning at discretion of the instructor and run through Sunday. In either case you will spend approximately 10 hours divided between the classroom and the pool over that week- end. The following week-end you will complete your open water requirement diving with your instructor.


* SS offers private instruction and special scheduling. The cost for this special service is determined upon evaluation of the request.


** SS Open Water Dive Referrals to Warm-Water Destinations (Hawaii, Caribbean, etc.) are available and cost is for the course instruction, materials and basic equipment only (no scuba equipment rental or travel cost). Ready to reserve a date to learn to be a scuba diver? Signature Scuba Class Schedules Once you pick the Open Water Diver Course, call (909) 721-3591 to check class availability and reserve your spot in the class. It is that easy!

Bring your diving to life. Having video and pictures lets you share the adventure. Signature Scuba carries  cameras. Let...
06/10/2026

Bring your diving to life. Having video and pictures lets you share the adventure.

Signature Scuba carries cameras. Let the fun begin, create fomo and capture memories on an Insta360.





Are you ready for the summer dive season? Signature is hear to help.If you need new gear,  need it serviced, or need a r...
06/09/2026

Are you ready for the summer dive season? Signature is hear to help.

If you need new gear, need it serviced, or need a refresher, stop on by and we can help.

Like, comment, and share.





Unlock the doors to a new adventure with SCUBA diving. Our experienced Instructors are here to teach you to be confident...
06/07/2026

Unlock the doors to a new adventure with SCUBA diving. Our experienced Instructors are here to teach you to be confident, safe, and respectful in our ocean. This is your sign to enroll in Open Water today.

📸: , one of our preferred charter boats

06/06/2026

Signature has a great sale on wetsuits. If you need a new suit, backup suit or know someone the needs a wetsuit stop in....
06/05/2026

Signature has a great sale on wetsuits. If you need a new suit, backup suit or know someone the needs a wetsuit stop in.

This opportunity is limited and you will not see a sale like this for a long time.

The sales goes until Saturday June 6th.





Padi enriched air nitrox is a course for all divers. You can check our website or see us at the shop to get signed up.Le...
06/04/2026

Padi enriched air nitrox is a course for all divers. You can check our website or see us at the shop to get signed up.

Learn the benefits and advantages to nitrox.

You ask? Why Nitrox Reduces DCS Risk

The mechanism is straightforward:

Nitrox has less nitrogen than air.
Lower nitrogen partial pressure, slower nitrogen uptake.
Less nitrogen absorbed fewer bubbles on ascent.
Fewer bubbles lower decompression stress and lower DCS risk.

Multiple studies show Nitrox divers produce significantly fewer venous gas emboli than air divers under identical profiles.

How Much Risk Reduction you ask me?

The reduction is meaningful but not absolute, here is why!

Nitrox reduces bubble formation a direct DCS predictor.
Nitrox increases no‑decompression limits, but if you use those longer limits, the DCS risk advantage disappears.
The greatest safety benefit occurs when diving Nitrox but following air NDLs.

What the Evidence Actually Says

Nitrox reduces venous gas bubbles after dives.
Nitrox reduces decompression stress on identical profiles.
Nitrox does not eliminate DCS risk.
Nitrox does not reduce narcosis.
Nitrox increases oxygen toxicity risk, and is just as narcotic as nitrogen.

Nitrox produces fewer and smaller bubbles than air when the dive profile is identical, because the diver absorbs less nitrogen.

The Real Reason Meyer Overton Correlation

The Meyer Overton rule if you don’t know is simple

A gas becomes more narcotic as its ability to dissolve into fat increases.
That’s it.
Narcosis strength = lipid solubility × partial pressure.

The narcotic potency oof a gas is proportional to its lipid solubility. (Lipid solubility means how easily a substance dissolves into fats especially the fatty membranes of nerve cells.

In other words:

Gases that dissolve easily into fatty neural tissue
It disrupt ion channels and neurotransmission that cause narcosis

Oxygen is highly lipid soluble, almost identical to nitrogen.

So,

O2 is just as narcotic as N2 at the same partial pressure.

This is why oxygen is assigned a narcotic potency of 1.0, the same as nitrogen, in most technical diving models.

Why Oxygen Feels Less Narcotic in Real Diving? I’m glad you asked!

Even though oxygen is narcotic, divers don’t experience oxygen narcosis the same wayas nitrogen narcosis.

Oxygen is metabolized as I stated above.

A portion of the oxygen you breathe is consumed by tissues, so the effective partial pressure in the CNS is lower than the inspired PO2.

Nitrogen is not metabolized at all. This just means your body doesn’t break it down to be used. It’s an inert gas.

You never dive with high PO2 at depth

As you learned you keep PO2 around

1.2–1.4 working
1.6 deco

At 130 ft on air, your nitrogen partial pressure is 3.16 ATA.
You would never expose your brain to 3.16 ATA of oxygen right! That wasn’t a question 😳🤢, you’d have a seizure.

So oxygen’s narcotic effect is limited by toxicity, not by narcotic potency, if that make sense.

Narcosis is dominated by the gas with the highest partial pressure

At depth, nitrogen’s partial pressure is much higher than oxygen’s, so nitrogen dominates the narcotic load.

Why Technical Agencies Treat O2 as Narcotic

Most technical agencies
O2 = narcotic
N2 = narcotic
He = non narcotic
This is why END (Equivalent Narcotic Depth) calculations include oxygen!
Why Some Recreational Agencies Say, Oxygen Isn’t Narcotic.

This is how you teach, why you teach it this way for student understanding not physiological.

So, Recreational agencies simplify the message

Nitrogen causes narcosis
Oxygen causes toxicity!

This tends to avoid confusing new divers with confusion.

But in technical diving, the simplified version is not accurate enough.

So after all that it’s simple but not really.

Oxygen is narcotic because narcosis is based on lipid solubility and partial pressure.
We don’t feel oxygen narcosis because PO2 is kept low to avoid toxicity, not because oxygen is non‑narcotic.

Takeaway for Real World Diving

If your goal is maximum safety, the best practice is
Dive Nitrox. Follow air NDLs. Keep PO2

CPR, AED, O2 provider save lives.If you need to get certified or renew your cert., Signature has classes open to everyon...
06/03/2026

CPR, AED, O2 provider save lives.
If you need to get certified or renew your cert., Signature has classes open to everyone, not just divers..

Rescue is an important course for divers. Stay safe and aware.

06/02/2026

Signature Scuba, a respected Southern California dive center known for high‑quality training, customer service, and a strong community presence, is seeking a full‑time Shop Manager to oversee daily operations and support the continued growth of the business.

Address

11955 Jack Benny Drive, Ste 102
Rancho Cucamonga, CA
91739

Opening Hours

Monday 10am - 6pm
Tuesday 10am - 6pm
Thursday 10am - 6pm
Friday 10am - 6pm
Saturday 10am - 4pm

Telephone

+19094768183

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