USCG MST SWE Exam/ USCG MST SWE Exam Preparation
USCG MST SWE EXAM/ USCG MST SWE EXAM PREPARATION
/USCG MST SWE PRACTICE EXAM NEWEST 2025/2026
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |BRAND NEW VERSION!!
What other types of cargo can be loaded at the same time as an explosive class
1.1 on board a vessel? - Correct Answer-none
During the prewash procedure, where are Category "A" and high-viscosity
Category "B" and "C" NLS's discharged? - Correct Answer-Reception facility
Once an oil transfer is complete, the person in charge must _____. - Correct
Answer-sign the transfer papers
The purpose of a facility Certificate of Adequacy is to ___? - Correct Answer-verify
adequacy of the facility to receive NLS's
Which application form would be used for a facility applying for a Noxious Liquid
Substance COA? - Correct Answer-C
What does a vessel have to have in order for a facility to be able to receive
vapors? - Correct Answer-Valid COI endorsed for vapor recovery
What is a vapor destruction unit? - Correct Answer-Incinerator
1|Page
, USCG MST SWE Exam/ USCG MST SWE Exam Preparation
What color must the vapor recovery hose be? - Correct Answer-yellow and red
What must be stenciled on a Vapor Recovery hose? - Correct Answer-"Vapor"
What is the general color combination used to mark fire fighting appliances in a
warehouse? - Correct Answer-Red and white
What do facilities with vapor recovery systems have to provide to the Coast
Guard? - Correct Answer-Written certification that the VRS meets the
requirements
For vapor recovery systems, who is a certifying entity? - Correct Answer-Individual
or company certified by G-MTH
May the COTP impose any requirements from 33 CFR 154-156 on a Marina Fuel
Dock, that does not transfer oil or hazmat in bulk to a vessel with a capacity of
over 250 Bbls? - Correct Answer-Yes
While conducting a spot check of MOTF, you notice that there are no watchmen
provided to keep the barges secured from unauthorized access. Is this a problem?
- Correct Answer-Yes
What things DO NOT have to be marked on all oil transfer hoses? - Correct
Answer-Burst pressure
2|Page
, USCG MST SWE Exam/ USCG MST SWE Exam Preparation
What class of explosives require written permits? - Correct Answer-1.2, 1.3, 1.4,
1.5
Who is required to witness and verify the prewash of any cargo tank? - Correct
Answer-prewash surveyor
What equipment is required when a product poses a significant environmental
threat? - Correct Answer-discharge removal
The regulations in 33 CFR 154 apply to a facility or marina which is capable of
transferring ___ barrels or more. - Correct Answer-250
The purpose of a facility Interim Certificate of Adequacy is to _____. - Correct
Answer-allow operations pending review of the paperwork and on-scene
inspection of the facility
Cargo pump systems and gauges, cargo hoses and piping, and relief valve
operations is required to be tested at least once every ___ months. - Correct
Answer-12
What is the MAXIMUM distance in feet for cargo space between cross aisles? -
Correct Answer-75
What is the MINIMUM width allowed for the main aisle on a designated
waterfront facility with fire truck access is _____ feet. - Correct Answer-20
3|Page
, USCG MST SWE Exam/ USCG MST SWE Exam Preparation
What is the MINIMUM width allowed for the main aisle on a designated
waterfront facility without fire truck access is _____ feet. - Correct Answer-8
How much clearance shall be maintained around fire fighting appliances
surrounded by cargo? - Correct Answer-3 feet
How much clearance shall be maintained around fire fighting appliances? - Correct
Answer-4 feet
No cargo shall be tiered closer then 3 feet to a ceiling structure member or ___
inches to a sprinkler head. - Correct Answer-12
When stacking flammable or combustible material, what is the MAXIMUM height
of flammable cargo? - Correct Answer-12 feet
How many feet of clear and open space must be maintained between cargo,
freight, merchandise and other materials piles and both sides of facility walls, fire
walls and fire stops, and sides of the pier? - Correct Answer-2 feet
Which form is the application and permit to handle explosives or other dangerous
cargo? - Correct Answer-CG-4260
The first and broadest term used to describe regulated cargo? - Correct Answer-
Dangerous Cargo
Who is responsible for providing the witness for a prewash - Correct Answer-COTP
4|Page
USCG MST SWE EXAM/ USCG MST SWE EXAM PREPARATION
/USCG MST SWE PRACTICE EXAM NEWEST 2025/2026
COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |BRAND NEW VERSION!!
What other types of cargo can be loaded at the same time as an explosive class
1.1 on board a vessel? - Correct Answer-none
During the prewash procedure, where are Category "A" and high-viscosity
Category "B" and "C" NLS's discharged? - Correct Answer-Reception facility
Once an oil transfer is complete, the person in charge must _____. - Correct
Answer-sign the transfer papers
The purpose of a facility Certificate of Adequacy is to ___? - Correct Answer-verify
adequacy of the facility to receive NLS's
Which application form would be used for a facility applying for a Noxious Liquid
Substance COA? - Correct Answer-C
What does a vessel have to have in order for a facility to be able to receive
vapors? - Correct Answer-Valid COI endorsed for vapor recovery
What is a vapor destruction unit? - Correct Answer-Incinerator
1|Page
, USCG MST SWE Exam/ USCG MST SWE Exam Preparation
What color must the vapor recovery hose be? - Correct Answer-yellow and red
What must be stenciled on a Vapor Recovery hose? - Correct Answer-"Vapor"
What is the general color combination used to mark fire fighting appliances in a
warehouse? - Correct Answer-Red and white
What do facilities with vapor recovery systems have to provide to the Coast
Guard? - Correct Answer-Written certification that the VRS meets the
requirements
For vapor recovery systems, who is a certifying entity? - Correct Answer-Individual
or company certified by G-MTH
May the COTP impose any requirements from 33 CFR 154-156 on a Marina Fuel
Dock, that does not transfer oil or hazmat in bulk to a vessel with a capacity of
over 250 Bbls? - Correct Answer-Yes
While conducting a spot check of MOTF, you notice that there are no watchmen
provided to keep the barges secured from unauthorized access. Is this a problem?
- Correct Answer-Yes
What things DO NOT have to be marked on all oil transfer hoses? - Correct
Answer-Burst pressure
2|Page
, USCG MST SWE Exam/ USCG MST SWE Exam Preparation
What class of explosives require written permits? - Correct Answer-1.2, 1.3, 1.4,
1.5
Who is required to witness and verify the prewash of any cargo tank? - Correct
Answer-prewash surveyor
What equipment is required when a product poses a significant environmental
threat? - Correct Answer-discharge removal
The regulations in 33 CFR 154 apply to a facility or marina which is capable of
transferring ___ barrels or more. - Correct Answer-250
The purpose of a facility Interim Certificate of Adequacy is to _____. - Correct
Answer-allow operations pending review of the paperwork and on-scene
inspection of the facility
Cargo pump systems and gauges, cargo hoses and piping, and relief valve
operations is required to be tested at least once every ___ months. - Correct
Answer-12
What is the MAXIMUM distance in feet for cargo space between cross aisles? -
Correct Answer-75
What is the MINIMUM width allowed for the main aisle on a designated
waterfront facility with fire truck access is _____ feet. - Correct Answer-20
3|Page
, USCG MST SWE Exam/ USCG MST SWE Exam Preparation
What is the MINIMUM width allowed for the main aisle on a designated
waterfront facility without fire truck access is _____ feet. - Correct Answer-8
How much clearance shall be maintained around fire fighting appliances
surrounded by cargo? - Correct Answer-3 feet
How much clearance shall be maintained around fire fighting appliances? - Correct
Answer-4 feet
No cargo shall be tiered closer then 3 feet to a ceiling structure member or ___
inches to a sprinkler head. - Correct Answer-12
When stacking flammable or combustible material, what is the MAXIMUM height
of flammable cargo? - Correct Answer-12 feet
How many feet of clear and open space must be maintained between cargo,
freight, merchandise and other materials piles and both sides of facility walls, fire
walls and fire stops, and sides of the pier? - Correct Answer-2 feet
Which form is the application and permit to handle explosives or other dangerous
cargo? - Correct Answer-CG-4260
The first and broadest term used to describe regulated cargo? - Correct Answer-
Dangerous Cargo
Who is responsible for providing the witness for a prewash - Correct Answer-COTP
4|Page
