Advanced Buoyancy Control
$459.99What you should have learned in open water, but probably didn’t.
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What you should have learned in open water, but probably didn’t.


The Advanced course expands your skills, and takes you deeper.

Complete the academic portion of your TDI Sidemount Diver certification entirely online. This eLearning-only option covers gas matching procedures, gas management with independent cylinders, equipment considerations, and specialized trim and propulsion techniques for side-mounted cylinder configurations, at your own pace. Note: this listing covers online academics only. In-water training days are billed separately through our…

Complete the academic portion of the TDI Intro to Tech Diver course entirely online. This eLearning-only option covers the theory behind configuring and managing technical gear such as long hose regulators, backplates, and wings, along with buddy skills, gas matching, trim, and finning techniques that bridge recreational and technical diving, at your own pace. Note:…

Complete the academic portion of your TDI Helitrox Diver certification entirely online. This eLearning-only option covers planned staged decompression diving theory to a maximum depth of 150 feet using enriched air nitrox and helium mixes with no greater than 35% helium content, at your own pace. Note: this listing covers online academics only. In-water training…

Complete the academic portion of your TDI Decompression Procedures Diver certification entirely online. This eLearning-only option covers planned staged decompression diving theory, dive planning, gas management, and emergency procedures for dives beyond no-decompression limits, at your own pace. Note: this listing covers online academics only. In-water training days are billed separately through our Technical Training…

Complete the academic portion of your TDI Advanced Nitrox Diver certification entirely online. This eLearning-only option covers gas blending theory, equivalent narcotic depth, oxygen exposure limits, and dive computer and table planning for enriched air diving from EAN21 through 100% oxygen, at your own pace. Note: this listing covers online academics only. In-water training days…


Meet workplace safety requirements with First Response Training International’s Workplace CPR/AED course. Learn essential skills to respond to sudden cardiac arrest, including CPR technique and proper use of an automated external defibrillator (AED). OSHA and ILCOR compliant training ideal for employers and employees alike. Prerequisites: Minimum age 18, 10 with parental consent What’s…

Be prepared to help in a breathing emergency with First Response Training International’s Oxygen Administration course. Learn how to safely and effectively administer emergency oxygen to a breathing or non-breathing person. OSHA and ILCOR compliant training designed for divers, lifeguards, and workplace responders. Prerequisites: Minimum age 18, 10 with parental consent What’s included: Online academics,…

Protect yourself and others with First Response Training International’s Bloodborne Pathogens course. Learn how bloodborne pathogens are transmitted, how to recognize situations where exposure may occur, and methods for reducing exposure risk. Meets OSHA requirements for workplace bloodborne pathogens training. Prerequisites: Minimum age 18, 10 with parental consent What’s included: Online academics, hands-on skills review,…

Keep your scuba tanks safe and compliant with TDI’s VIP Inspector (Visual Inspection Procedures) course. Learn to perform thorough visual inspections of scuba cylinders, identify corrosion and damage, and understand valve maintenance and cylinder standards. A must for divers who fill their own tanks or want a deeper understanding of cylinder safety. Prerequisites: Minimum age…

Be ready to save a life with First Response Training International’s Adult & Child Emergency Care course. This ILCOR-compliant program combines CPR, AED use, and first aid training into one comprehensive course, giving you the skills and confidence to respond to emergencies involving infants, children, and adults. Perfect for divers, parents, caregivers, and workplace safety…

Expand your diving skills into the dark with TDI’s Night and Limited Visibility Diver course. Learn to navigate confidently using lights and compass, communicate effectively with your buddy in low-visibility conditions, and manage the unique psychological and technical challenges of night diving. This course opens up an entirely new dimension of underwater exploration. Prerequisites: SDI…

Cover more ground and see more of the underwater world with TDI’s Diver Propulsion Vehicle (DPV) course. You’ll learn to safely operate an underwater scooter for extended-range diving, including navigation, buddy towing, emergency procedures, and battery management. This course is perfect for divers who want to explore wrecks, walls, and large dive sites with greater…


The Gildan 5000 heavy cotton tee is a dependable classic made for everyday wear and custom printing. Its 100% cotton fabric is tightly knit to give designs sharper detail and long-lasting color. The seamless body eliminates side seams for a smoother fit, while reinforced shoulders keep the shirt in shape through repeated washes. Durable, comfortable,…




The Chillproof Long Sleeve Full Zip Top keeps you warm, dry, and comfortable with its 3-layer thermal fabric and full-length zipper for easy temperature control and quick changes in or out of the water.


A double-ender bolt snap is a corrosion-resistant, one-hand-operable clip for fast, temporary connections. It’s perfect for attaching spools/SMBs, wet notes, backup lights, or pocket gear to D-rings, parking hoses or stage gear, and keeping your kit streamlined from boat to bottom.

A 316 steel, double-ender bolt snap is a corrosion-resistant, one-hand-operable clip for fast, temporary connections. It’s perfect for attaching spools/SMBs, wet notes, backup lights, or pocket gear to D-rings, parking hoses or stage gear, and keeping your kit streamlined from boat to bottom. Compare to xDeep NX