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SSI Open Water Diver Version A 2025 – Complete Study
Guide, Practice Questions, and Certification Prep
Prepare for your SSI Open Water Diver Version A 2025 exam with this comprehensive study
guide, including key diving concepts, safety procedures, skills review, and practice
questions to help learners earn their Open Water Diver certification confidently.
• SSI Open Water Diver
• SSI Open Water Diver Version A
• SSI Open Water exam prep
• SSI Open Water certification study guide
• SSI diving course 2025
1. The transfer of oxygen and nitrogen into the bloodstream occurs through the walls of the:
A. Bronchiole trees
B. Alveoli
C. Arteries
D. Blood vessels - ANSWER-B. Alveoli
2. Gas can enter the bloodstream and cause serious damage to the lungs or even death by:
A. Diving with respiratory congestion
B. Holding your breath while diving
C. All answers are correct
D. Ascending too fast - ANSWER-C. All answers are correct
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3. If a flexible air-filled container at 30 meters of sea water has a volume of 6 liters, what would be the
volume if it were transported to the surface?
A. 6 liters
B. 24 liters
C. 18 liters
D. 12 liters - ANSWER-B. 24 liters
4. Overexpansion injuries can be prevented by:
A. All answers are correct
B. Never holding your breath while diving
C. Dive with a properly maintained high-quality Total Diving System
D. Learning the correct breathing patterns reinforced in classroom, pool, and open water training -
ANSWER-A. All answers are correct
The most serious lung overexpansion injury is:
A. Mediastinal emphysema
B. Arterial Gas Embolism
C. Subcutaneous emphysema
D. Pneumothorax - ANSWER-B. Arterial Gas Embolism
Which of the following overexpansion injuries can be characterized by swelling in the neck area with a
crackling sensation upon touching the swollen area?
A. Pneumothorax
B. Arterial Gas Embolism
C. Subcutaneous emphysema
D. Mediastinal emphysema - ANSWER-C. Subcutaneous emphysema
15. The purpose of a BC is to:
A. Maintain neutral buoyancy during the dive
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B. All answers are correct
C. Provide surface floatation
D. Control ascent and descent rates - ANSWER-B. All answers are correct
16. The Information System components are:
A. Dive computer, MySSI Logbook, and written dive plan
B. Dive Computer and MySSI Logbook
C. Dive Computer, Analogue Instruments, if the Dive Computer does not supply all necessary information
and the MySSI Logbook
D. SSI Dive Tables and MySSI Logbook - ANSWER-C. Dive Computer, Analogue Instruments, if the Dive
Computer does not supply all necessary information and the MySSI Logbook
17. The Basic Rules of Scuba stated in the proper order of importance are:
A. Breathe continuously, ascend slowly and maintain control, and never dive alone or beyond your level
of training
B. Maintain neutral buoyancy, breathe continuously, and ascend slowly
C. Breathe continuously, Use compressed air only, and the 3-R Rule
D. Regain control, respond, and react - ANSWER-A. Breathe continuously, ascend slowly and maintain
control, and never dive alone or beyond your level of training
18. The SSI Equipment Service Program is designed to:
A. Notify you when a hydrostatic test is due on your high pressure cylinder
B. Keep all the components of the Total Diving System to optimal performance
C. Protect the most important system components
D. Protect the Delivery and Buoyancy Control System - ANSWER-B. Keep all the components of the Total
Diving System to optimal performance
Which of the following overexpansion injuries can be characterized by chest pain, breathing difficulties,
weakness, and cyanosis (blueness) of the lips and nail beds:
A. Rupture of Eardrum
B. Bends
SSI Open Water Diver Version A 2025 – Complete Study
Guide, Practice Questions, and Certification Prep
Prepare for your SSI Open Water Diver Version A 2025 exam with this comprehensive study
guide, including key diving concepts, safety procedures, skills review, and practice
questions to help learners earn their Open Water Diver certification confidently.
• SSI Open Water Diver
• SSI Open Water Diver Version A
• SSI Open Water exam prep
• SSI Open Water certification study guide
• SSI diving course 2025
1. The transfer of oxygen and nitrogen into the bloodstream occurs through the walls of the:
A. Bronchiole trees
B. Alveoli
C. Arteries
D. Blood vessels - ANSWER-B. Alveoli
2. Gas can enter the bloodstream and cause serious damage to the lungs or even death by:
A. Diving with respiratory congestion
B. Holding your breath while diving
C. All answers are correct
D. Ascending too fast - ANSWER-C. All answers are correct
,2|Page
3. If a flexible air-filled container at 30 meters of sea water has a volume of 6 liters, what would be the
volume if it were transported to the surface?
A. 6 liters
B. 24 liters
C. 18 liters
D. 12 liters - ANSWER-B. 24 liters
4. Overexpansion injuries can be prevented by:
A. All answers are correct
B. Never holding your breath while diving
C. Dive with a properly maintained high-quality Total Diving System
D. Learning the correct breathing patterns reinforced in classroom, pool, and open water training -
ANSWER-A. All answers are correct
The most serious lung overexpansion injury is:
A. Mediastinal emphysema
B. Arterial Gas Embolism
C. Subcutaneous emphysema
D. Pneumothorax - ANSWER-B. Arterial Gas Embolism
Which of the following overexpansion injuries can be characterized by swelling in the neck area with a
crackling sensation upon touching the swollen area?
A. Pneumothorax
B. Arterial Gas Embolism
C. Subcutaneous emphysema
D. Mediastinal emphysema - ANSWER-C. Subcutaneous emphysema
15. The purpose of a BC is to:
A. Maintain neutral buoyancy during the dive
, 3|Page
B. All answers are correct
C. Provide surface floatation
D. Control ascent and descent rates - ANSWER-B. All answers are correct
16. The Information System components are:
A. Dive computer, MySSI Logbook, and written dive plan
B. Dive Computer and MySSI Logbook
C. Dive Computer, Analogue Instruments, if the Dive Computer does not supply all necessary information
and the MySSI Logbook
D. SSI Dive Tables and MySSI Logbook - ANSWER-C. Dive Computer, Analogue Instruments, if the Dive
Computer does not supply all necessary information and the MySSI Logbook
17. The Basic Rules of Scuba stated in the proper order of importance are:
A. Breathe continuously, ascend slowly and maintain control, and never dive alone or beyond your level
of training
B. Maintain neutral buoyancy, breathe continuously, and ascend slowly
C. Breathe continuously, Use compressed air only, and the 3-R Rule
D. Regain control, respond, and react - ANSWER-A. Breathe continuously, ascend slowly and maintain
control, and never dive alone or beyond your level of training
18. The SSI Equipment Service Program is designed to:
A. Notify you when a hydrostatic test is due on your high pressure cylinder
B. Keep all the components of the Total Diving System to optimal performance
C. Protect the most important system components
D. Protect the Delivery and Buoyancy Control System - ANSWER-B. Keep all the components of the Total
Diving System to optimal performance
Which of the following overexpansion injuries can be characterized by chest pain, breathing difficulties,
weakness, and cyanosis (blueness) of the lips and nail beds:
A. Rupture of Eardrum
B. Bends
