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questions
Marine System
and verified answers.
ABYC 2025 Marine System
The Deck Fill Cap should be labeled to indicate if it is what type of access point. -
ANSWER ✔ "Water, Fuel, Waste"
In regard to "The Tank", what material has to be approved and by whom? - ANSWER ✔
Tanks made of "plastic" must be approved by the "U.S. Food and Drug Administration
(FDA)"
The components that can remove particulate matter, in liquid such as water of diesel, is
known as what? Where should this component be located within the system? -
ANSWER ✔ The component is a "Filter or Strainer".
This component should be located inline between the tank and the pressure pump.
A pressure pump must be equipped with what? - ANSWER ✔ A "pressure shut off
switch."
What device is intended to maintain a stable pressure within the system and to minimize
pump cycling on and off? - ANSWER ✔ "An Accumulator Tank"
How does an Accumulator Tank maintain constant PSI in the system? - ANSWER ✔
"Air is injected onto one side of an internal rubber bladder"
2026-2027: ABYC 2025 Marine System Page 1 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
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ABYC 2025
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Marineand
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questions
Marine System
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In a system where high pressure city water is supplied from the dock, what is used in
the system to reduce the pressure to a nominal working pressure? - ANSWER ✔
"Pressure Regulator"
This device, similar to a diode in an electric circuit, only allows fluid to flow in one
direction. - ANSWER ✔ "Check Valve"
A common noncompliant issues related to this Standard is the use of _________ for
potable water tanks - ANSWER ✔ "Aluminum"
Fiberglass Tanks may be used if the resin used is ____________ approved by the FDA -
ANSWER ✔ "Food Grade"
According to Materials: H-23.6.1:
All materials used in the construction of the water system shall be capable of
withstanding an ambient temperature range between? - ANSWER ✔ "-40 to 140
degrees F or -40 to +60 degrees C"
(-40 degrees F and -40 degrees C are actually the same)
According to Shore Water Connection: H-23.7.3.1.1:
2026-2027: ABYC 2025 Marine System Page 2 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
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ABYC 2025
questions
Marineand
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2025
questions
Marine System
and verified answers.
If a shore water connection is provided, a pressure reducing valve and check valve shall
be installed to reduce the pressure to not to exceed what psi" - ANSWER ✔ "80 PSI"
According to Storage Tank Deck Fill Inlet: H-23.7.5.1:
The storage tank inlet shall be installed how far from the Fuel tank fill and sewage
pump-out fitting? - ANSWER ✔ "As far as practical"
According to Storage Tank Deck Fill Inlet: H-23.7.5.3:
What two markings shall be permanently marked on the storage tanks? - ANSWER ✔
"Water" or "the ISO Graphical symbol"
According to Factor of Safety: H-23.7.2.1:
Components subject to pressure shall be designed with a minimum safety factor of
what" - ANSWER ✔ "Two times the nominal working pressure"
According to Pressure Pumps H-23.7.4.1: No exposed part of the pump shall attain a
temperature in excess of ______F when operating in an ambient temperature of ______F
- ANSWER ✔ "In excess of 257 Degrees F"
"Ambient Temperature of 140 Degrees F"
According to Storage Tanks: H-23.7.6.2:
2026-2027: ABYC 2025 Marine System Page 3 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
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ABYC 2025
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2025
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Marine System
and verified answers.
Storage tanks shall be equipped with a vent to allow for the operation of the
____________, for ____________ purposes, and designed to prevent ____________ by
excluding foreign objects. - ANSWER ✔ "Operation of the Pressure Pump"
"For tank filling purposes"
"Contamination of water"
According to Storage Tanks: H-23.7.6.3:
Storage Tanks shall be capable of withstanding a static pressure of at least
______________ times the distance from the tank bottom to the deck fill plate or vent, but
not less than ______ Psi. - ANSWER ✔ "of at least 1.5 times"
"not less than 3 psi (21kPa)"
According to Desalinators: H-23.7.7.1:
The output of a desalinator used to fill fresh water storage tanks shall not subject the
tank or its vent system to more than _____ Psi. - ANSWER ✔ "More than 3 Psi"
According to Water Heaters: H-23.7.10.1:
Maximum pressure relief shall be set at not more than ________% of the nominal
working pressure. - ANSWER ✔ "not more than 175%"
According to Water Heaters: H-23.7.10.2.2:
2026-2027: ABYC 2025 Marine System Page 4 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
ABYC 2025
questions
Marineand
System.pdf=
accurate
Page 1answers.
of
Includes
199 2026//2027
accurately ABYC
reviewed
2025
questions
Marine System
and verified answers.
ABYC 2025 Marine System
The Deck Fill Cap should be labeled to indicate if it is what type of access point. -
ANSWER ✔ "Water, Fuel, Waste"
In regard to "The Tank", what material has to be approved and by whom? - ANSWER ✔
Tanks made of "plastic" must be approved by the "U.S. Food and Drug Administration
(FDA)"
The components that can remove particulate matter, in liquid such as water of diesel, is
known as what? Where should this component be located within the system? -
ANSWER ✔ The component is a "Filter or Strainer".
This component should be located inline between the tank and the pressure pump.
A pressure pump must be equipped with what? - ANSWER ✔ A "pressure shut off
switch."
What device is intended to maintain a stable pressure within the system and to minimize
pump cycling on and off? - ANSWER ✔ "An Accumulator Tank"
How does an Accumulator Tank maintain constant PSI in the system? - ANSWER ✔
"Air is injected onto one side of an internal rubber bladder"
2026-2027: ABYC 2025 Marine System Page 1 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
,Complete review with chapter-based
ABYC 2025
questions
Marineand
System.pdf=
accurate
Page 2answers.
of
Includes
199 2026//2027
accurately ABYC
reviewed
2025
questions
Marine System
and verified answers.
In a system where high pressure city water is supplied from the dock, what is used in
the system to reduce the pressure to a nominal working pressure? - ANSWER ✔
"Pressure Regulator"
This device, similar to a diode in an electric circuit, only allows fluid to flow in one
direction. - ANSWER ✔ "Check Valve"
A common noncompliant issues related to this Standard is the use of _________ for
potable water tanks - ANSWER ✔ "Aluminum"
Fiberglass Tanks may be used if the resin used is ____________ approved by the FDA -
ANSWER ✔ "Food Grade"
According to Materials: H-23.6.1:
All materials used in the construction of the water system shall be capable of
withstanding an ambient temperature range between? - ANSWER ✔ "-40 to 140
degrees F or -40 to +60 degrees C"
(-40 degrees F and -40 degrees C are actually the same)
According to Shore Water Connection: H-23.7.3.1.1:
2026-2027: ABYC 2025 Marine System Page 2 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
,Complete review with chapter-based
ABYC 2025
questions
Marineand
System.pdf=
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Page 3answers.
of
Includes
199 2026//2027
accurately ABYC
reviewed
2025
questions
Marine System
and verified answers.
If a shore water connection is provided, a pressure reducing valve and check valve shall
be installed to reduce the pressure to not to exceed what psi" - ANSWER ✔ "80 PSI"
According to Storage Tank Deck Fill Inlet: H-23.7.5.1:
The storage tank inlet shall be installed how far from the Fuel tank fill and sewage
pump-out fitting? - ANSWER ✔ "As far as practical"
According to Storage Tank Deck Fill Inlet: H-23.7.5.3:
What two markings shall be permanently marked on the storage tanks? - ANSWER ✔
"Water" or "the ISO Graphical symbol"
According to Factor of Safety: H-23.7.2.1:
Components subject to pressure shall be designed with a minimum safety factor of
what" - ANSWER ✔ "Two times the nominal working pressure"
According to Pressure Pumps H-23.7.4.1: No exposed part of the pump shall attain a
temperature in excess of ______F when operating in an ambient temperature of ______F
- ANSWER ✔ "In excess of 257 Degrees F"
"Ambient Temperature of 140 Degrees F"
According to Storage Tanks: H-23.7.6.2:
2026-2027: ABYC 2025 Marine System Page 3 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
, Complete review with chapter-based
ABYC 2025
questions
Marineand
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Page 4answers.
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Includes
199 2026//2027
accurately ABYC
reviewed
2025
questions
Marine System
and verified answers.
Storage tanks shall be equipped with a vent to allow for the operation of the
____________, for ____________ purposes, and designed to prevent ____________ by
excluding foreign objects. - ANSWER ✔ "Operation of the Pressure Pump"
"For tank filling purposes"
"Contamination of water"
According to Storage Tanks: H-23.7.6.3:
Storage Tanks shall be capable of withstanding a static pressure of at least
______________ times the distance from the tank bottom to the deck fill plate or vent, but
not less than ______ Psi. - ANSWER ✔ "of at least 1.5 times"
"not less than 3 psi (21kPa)"
According to Desalinators: H-23.7.7.1:
The output of a desalinator used to fill fresh water storage tanks shall not subject the
tank or its vent system to more than _____ Psi. - ANSWER ✔ "More than 3 Psi"
According to Water Heaters: H-23.7.10.1:
Maximum pressure relief shall be set at not more than ________% of the nominal
working pressure. - ANSWER ✔ "not more than 175%"
According to Water Heaters: H-23.7.10.2.2:
2026-2027: ABYC 2025 Marine System Page 4 of 199 ABYC 2025 Marine System.pdf- (exam preparation).
