MKC SWE STUDY GUIDE 2025 – VERIFIED QUESTIONS &
ANSWERS FOR USCG MACHINERY TECHNICIAN CHIEFS
Within how many days of an inspection are you required to submit the new boat
inspection report ~CORRECT ANSWER~10
List the six basic safety procedures to follow when troubleshooting or repairing
electrical components ~CORRECT ANSWER~1. Never operate, repair, adjust,
tamper with equipment unless assigned to do so.
2. obey all posted operating and safety precautions
3. de-energize equipment prior to repair.
4. always wear approved PPE.
5. use insulated tools and non-metalic flashlight.
6. tighten the connections of fremovable tes leads on portable meters.
generally the crown end of the piston is slightly smaller in diameter than the
skirt for what reason ~CORRECT ANSWER~to allow for expansion and proper
fit
piston ring gaps should be staggered at _ degrees to reduce gas leakage
~CORRECT ANSWER~180*
what could happen if you ignore the specific safety warning in the engine service
manual ~CORRECT ANSWER~injure yourself/people on or around the
boat/damage outboard engine
,a placard stating discharge of oil prohibited must be posted on all vessels more
than __ feet in length ~CORRECT ANSWER~26
what CFR regulations identifies prohibited spaces where oil and hazardous
material are not to be stored ~CORRECT ANSWER~33CFR155.470
what is the standard maximum ambient operating temperature for compressor
drive motors ~CORRECT ANSWER~104*F
in the vacuum gravity system, what part houses a set of inclined absorption
plates ~CORRECT ANSWER~vacuum gravity vessel
what filter element in an OWS is used to remove small particles such as shaving
and dirt from the oily water mixture ~CORRECT ANSWER~pre-filter
before working on or removing any parts of the air compressor, you should
make sure the following conditions are completed ~CORRECT ANSWER~the
compressor is completely blown down and the pressure is relieved
before and during the operation of the R/O what type of general inspection
should be conducted ~CORRECT ANSWER~make sure the flowmeters are clear
and floats are visable
,which safety precaution should be observed during R/O operation ~CORRECT
ANSWER~make sure all pressure relief valves dischards are unobstructed and
the release fluid is conducted to low pressure area clear of personnel
what are the three effects of excessively worn rudder shaft bearings ~CORRECT
ANSWER~1. imprecise and poor steering response
2.excessive vibration
3. leakage through the rudder post housing
what component registers cumulative volume in gallons of permeate being
produced by the R/O unit and being used by the ship ~CORRECT
ANSWER~Totalizing flow meter
normally a diesel engine start air bank has a minimum capacity for how many
cold and hot starts ~CORRECT ANSWER~1 cold and 9 hot
when conducting performance test, engines should be operated at what
percentage of coat guard load ~CORRECT ANSWER~80-90%
the ODR facilitates what type of operating data ~CORRECT ANSWER~1. trend
recording
2. event recording
3. dynamic recording
4. alarm recording
, 5. trip recording
what are the effects of a damaged propeller ~CORRECT ANSWER~1. lack of
power
2. high fuel consumption
3. unexpected vibration
high pressure pump creates ___ to____ PSI achieve reverse osmosis ~CORRECT
ANSWER~700-1000 PSI
pulsation dampener absorbs pulsations created on the discharge side of a high
pressure pump consisting of nitrogen charged rubber bladder charged to
approximately ~CORRECT ANSWER~2/3 system pressure
If the low pressure switch predetermined setting isn't met (on 110's it is 5 psi)
~CORRECT ANSWER~low pressure switch secures the high pressure pump
list the possible causes of low or variable cylinder compression ~CORRECT
ANSWER~1. damaged head gasket
2. damaged pistons
3. broke or stuck piston rings
4. scored cylinder walls
5. stuck valves (four stroke)
ANSWERS FOR USCG MACHINERY TECHNICIAN CHIEFS
Within how many days of an inspection are you required to submit the new boat
inspection report ~CORRECT ANSWER~10
List the six basic safety procedures to follow when troubleshooting or repairing
electrical components ~CORRECT ANSWER~1. Never operate, repair, adjust,
tamper with equipment unless assigned to do so.
2. obey all posted operating and safety precautions
3. de-energize equipment prior to repair.
4. always wear approved PPE.
5. use insulated tools and non-metalic flashlight.
6. tighten the connections of fremovable tes leads on portable meters.
generally the crown end of the piston is slightly smaller in diameter than the
skirt for what reason ~CORRECT ANSWER~to allow for expansion and proper
fit
piston ring gaps should be staggered at _ degrees to reduce gas leakage
~CORRECT ANSWER~180*
what could happen if you ignore the specific safety warning in the engine service
manual ~CORRECT ANSWER~injure yourself/people on or around the
boat/damage outboard engine
,a placard stating discharge of oil prohibited must be posted on all vessels more
than __ feet in length ~CORRECT ANSWER~26
what CFR regulations identifies prohibited spaces where oil and hazardous
material are not to be stored ~CORRECT ANSWER~33CFR155.470
what is the standard maximum ambient operating temperature for compressor
drive motors ~CORRECT ANSWER~104*F
in the vacuum gravity system, what part houses a set of inclined absorption
plates ~CORRECT ANSWER~vacuum gravity vessel
what filter element in an OWS is used to remove small particles such as shaving
and dirt from the oily water mixture ~CORRECT ANSWER~pre-filter
before working on or removing any parts of the air compressor, you should
make sure the following conditions are completed ~CORRECT ANSWER~the
compressor is completely blown down and the pressure is relieved
before and during the operation of the R/O what type of general inspection
should be conducted ~CORRECT ANSWER~make sure the flowmeters are clear
and floats are visable
,which safety precaution should be observed during R/O operation ~CORRECT
ANSWER~make sure all pressure relief valves dischards are unobstructed and
the release fluid is conducted to low pressure area clear of personnel
what are the three effects of excessively worn rudder shaft bearings ~CORRECT
ANSWER~1. imprecise and poor steering response
2.excessive vibration
3. leakage through the rudder post housing
what component registers cumulative volume in gallons of permeate being
produced by the R/O unit and being used by the ship ~CORRECT
ANSWER~Totalizing flow meter
normally a diesel engine start air bank has a minimum capacity for how many
cold and hot starts ~CORRECT ANSWER~1 cold and 9 hot
when conducting performance test, engines should be operated at what
percentage of coat guard load ~CORRECT ANSWER~80-90%
the ODR facilitates what type of operating data ~CORRECT ANSWER~1. trend
recording
2. event recording
3. dynamic recording
4. alarm recording
, 5. trip recording
what are the effects of a damaged propeller ~CORRECT ANSWER~1. lack of
power
2. high fuel consumption
3. unexpected vibration
high pressure pump creates ___ to____ PSI achieve reverse osmosis ~CORRECT
ANSWER~700-1000 PSI
pulsation dampener absorbs pulsations created on the discharge side of a high
pressure pump consisting of nitrogen charged rubber bladder charged to
approximately ~CORRECT ANSWER~2/3 system pressure
If the low pressure switch predetermined setting isn't met (on 110's it is 5 psi)
~CORRECT ANSWER~low pressure switch secures the high pressure pump
list the possible causes of low or variable cylinder compression ~CORRECT
ANSWER~1. damaged head gasket
2. damaged pistons
3. broke or stuck piston rings
4. scored cylinder walls
5. stuck valves (four stroke)
