SDI TDI
Sidemount Diver Speciality
Sidemount Diver Speciality
Couldn't load pickup availability
Who is this course for?
Who is this course for?
Diver looking to expand their in-water skills and techniques.
The certified diver who has interest in moving forward with technical diving education and expanding their equipment configuration options.
Course prerequisites
Course prerequisites
Open Water Scuba Diver, or equivalent.
Minimum age 18
What you can expect to learn
What you can expect to learn
Sidemount Diver Course takes an in-depth look at all of the following and more!
Gas matching procedures to include dissimilar volumes
Gas management utilizing independent cylinders
Psychological considerations of technical diving
Equipment considerations including:
Cylinder options
Regulator options
Buoyancy compensator/harness options
Proper weighting
Equipment configurations
Communication (light and hand signals)
Problem solving in a sidemount configuration
Diving in tight or confined spaces
Conservation
Water entries/exits
S-drills specific to sidemount diving
Some of the required skills you will have to demonstrate include:
Demonstrate various propulsion techniques such as the frog kick, modified frog kick, modified flutter kick, backwards kick, helicopter turns, and hand pulling if appropriate for the environment.
Demonstrate adequate buoyancy control; ability to hover at a fixed position in water column without moving hands or feet
Demonstrate adequate trim; ability to maintain proper position during the descent, bottom, and ascent portion of the dive
Demonstrate the ability to perform the following exercises while maintaining trim and buoyancy in the water column:
Unclipping and attaching sidemount cylinders
Perform gas switches with and without a mask
Demonstrate the ability to safely manage gas in independent cylinders
Demonstrate conservation, awareness, and back referencing techniques
Deploy a lift bag
Carry additional cylinders (optional)
What's in it for you?
What's in it for you?
Upon successful completion of this course, graduates may engage in sidemount diving activities without direct supervision so long as the following limits are adhered to:
The diving activities approximate those of training.
The areas of activities approximate those of training.
Planned dives do not exceed diver’s current certification level.
Sidemount Diver minimum requirements
Sidemount Diver minimum requirements
Perform all land drills and dive requirements safely 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.




Sidemount is a scuba diving equipment configuration which has scuba sets mounted alongside the diver, below the shoulders and along the hips, instead of on the back of the diver. It originated as a configuration for advanced cave diving, as it facilitates penetration of tight sections of cave, allows easy access to cylinder valves, provides easy and reliable gas redundancy, and tanks can be easily removed when necessary. These benefits for operating in confined spaces were also recognized by divers who conducted technical wreck diving penetrations.

Sidemount diving is now growing in popularity within the technical diving community for general decompression diving and is becoming an increasingly popular specialty training for recreational diving, with several diver certification agencies offering recreational and technical level sidemount training programs.

Sidemount diving configuration offers greater stability and easier-to-attain trim and control in the water. It is also claimed to be less physically tiring to carry, and get into, sidemount equipment than back-mounted doubles, especially when operating from a small boat or a rough shore entry.
The ability to attach, remove and replace cylinders while in the water allows the diver to avoid carrying twinned cylinders. The reduced physical exertion when conducting regulator shut-down procedures is a major benefit to divers who suffer from shoulder or back discomfort or reduced mobility.