Public Safety Underwater Investigator
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
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1. Which of the following best describes the primary mission of a Public
Safety Underwater Investigator?
A. Conducting recreational underwater photography surveys
B. Performing underwater crime-scene investigations, evidence recovery,
and documentation
C. Training commercial divers for offshore construction projects
D. Mapping ocean currents for environmental research
Answer: B
A Public Safety Underwater Investigator is primarily responsible for
investigating underwater incidents, recovering evidence, documenting
scenes, and supporting criminal or safety investigations through
specialized diving operations.
2. Before conducting an underwater evidence recovery operation, the
investigator should first:
,A. Begin searching immediately to prevent evidence movement
B. Remove all personal equipment to reduce contamination
C. Complete a risk assessment and establish an operational plan
D. Allow recreational divers to search the area first
Answer: C
A proper risk assessment and operational plan identify hazards, assign
responsibilities, establish procedures, and ensure the investigation is
conducted safely and systematically.
3. The most important principle when handling underwater evidence is
to:
A. Recover evidence as quickly as possible regardless of conditions
B. Preserve evidence integrity and prevent contamination
C. Allow multiple divers to handle objects for confirmation
D. Clean recovered items immediately underwater
Answer: B
Evidence integrity is essential because contamination, improper handling,
or undocumented changes may compromise its usefulness in legal
proceedings.
4. A public safety diver entering contaminated water should primarily
rely on:
A. Increased swimming speed
B. Proper protective equipment and contamination procedures
C. Reduced dive time only
D. Visual observation without equipment
Answer: B
,Contaminated environments require appropriate protective equipment,
hazard evaluation, and decontamination procedures to protect the diver
and preserve safety.
5. The first step in establishing an underwater crime scene is to:
A. Recover all visible objects immediately
B. Secure and document the scene
C. Allow witnesses to search the area
D. Move objects to improve visibility
Answer: B
Securing and documenting the scene prevents unauthorized access,
protects evidence, and establishes a reliable investigative record.
6. Which document provides a permanent written record of underwater
investigative activities?
A. Dive log and investigative report
B. Recreational dive certification card
C. Equipment maintenance checklist only
D. Weather forecast report
Answer: A
Dive logs and investigative reports document procedures, observations,
evidence handling, and operational details necessary for investigation and
court review.
7. A diver locating potential evidence underwater should first:
A. Immediately place it in a container
B. Move it closer to shore
C. Document its original position before recovery
D. Allow another diver to inspect it by touch
, Answer: C
Recording the original location and condition of evidence preserves scene
reconstruction information and strengthens investigative reliability.
8. Which underwater search method involves divers following parallel
paths across an area?
A. Circular search
B. Grid search
C. Random search
D. Drift search
Answer: B
A grid search uses systematic parallel patterns to ensure complete
coverage and reduce the chance of missing evidence.
9. The primary purpose of underwater crime-scene photography is to:
A. Replace written documentation
B. Provide visual evidence of scene conditions and evidence location
C. Entertain training observers
D. Eliminate the need for witness statements
Answer: B
Photography provides an objective visual record of the underwater
environment, evidence placement, and investigative process.
10. Which factor most affects visibility during underwater
investigations?
A. Diver certification level
B. Water temperature only
C. Sediment disturbance and environmental conditions
D. Type of dive watch used
Certification Exam Practice Questions
And Correct Answers (Verified Answers)
Plus Rationale 2027 Q&A| Instant
Download Pdf.
1. Which of the following best describes the primary mission of a Public
Safety Underwater Investigator?
A. Conducting recreational underwater photography surveys
B. Performing underwater crime-scene investigations, evidence recovery,
and documentation
C. Training commercial divers for offshore construction projects
D. Mapping ocean currents for environmental research
Answer: B
A Public Safety Underwater Investigator is primarily responsible for
investigating underwater incidents, recovering evidence, documenting
scenes, and supporting criminal or safety investigations through
specialized diving operations.
2. Before conducting an underwater evidence recovery operation, the
investigator should first:
,A. Begin searching immediately to prevent evidence movement
B. Remove all personal equipment to reduce contamination
C. Complete a risk assessment and establish an operational plan
D. Allow recreational divers to search the area first
Answer: C
A proper risk assessment and operational plan identify hazards, assign
responsibilities, establish procedures, and ensure the investigation is
conducted safely and systematically.
3. The most important principle when handling underwater evidence is
to:
A. Recover evidence as quickly as possible regardless of conditions
B. Preserve evidence integrity and prevent contamination
C. Allow multiple divers to handle objects for confirmation
D. Clean recovered items immediately underwater
Answer: B
Evidence integrity is essential because contamination, improper handling,
or undocumented changes may compromise its usefulness in legal
proceedings.
4. A public safety diver entering contaminated water should primarily
rely on:
A. Increased swimming speed
B. Proper protective equipment and contamination procedures
C. Reduced dive time only
D. Visual observation without equipment
Answer: B
,Contaminated environments require appropriate protective equipment,
hazard evaluation, and decontamination procedures to protect the diver
and preserve safety.
5. The first step in establishing an underwater crime scene is to:
A. Recover all visible objects immediately
B. Secure and document the scene
C. Allow witnesses to search the area
D. Move objects to improve visibility
Answer: B
Securing and documenting the scene prevents unauthorized access,
protects evidence, and establishes a reliable investigative record.
6. Which document provides a permanent written record of underwater
investigative activities?
A. Dive log and investigative report
B. Recreational dive certification card
C. Equipment maintenance checklist only
D. Weather forecast report
Answer: A
Dive logs and investigative reports document procedures, observations,
evidence handling, and operational details necessary for investigation and
court review.
7. A diver locating potential evidence underwater should first:
A. Immediately place it in a container
B. Move it closer to shore
C. Document its original position before recovery
D. Allow another diver to inspect it by touch
, Answer: C
Recording the original location and condition of evidence preserves scene
reconstruction information and strengthens investigative reliability.
8. Which underwater search method involves divers following parallel
paths across an area?
A. Circular search
B. Grid search
C. Random search
D. Drift search
Answer: B
A grid search uses systematic parallel patterns to ensure complete
coverage and reduce the chance of missing evidence.
9. The primary purpose of underwater crime-scene photography is to:
A. Replace written documentation
B. Provide visual evidence of scene conditions and evidence location
C. Entertain training observers
D. Eliminate the need for witness statements
Answer: B
Photography provides an objective visual record of the underwater
environment, evidence placement, and investigative process.
10. Which factor most affects visibility during underwater
investigations?
A. Diver certification level
B. Water temperature only
C. Sediment disturbance and environmental conditions
D. Type of dive watch used
