What protection system is installed to reduce corrosion or deterioration of a ship’s hull in seawater?
Cathodic
What is the electrolyte in a cathodic protection system?
seawater
Which of the following factors is used to determine the amount of corrosion on a hull?
1. The temperature of the seawater 2. The resistivity of the seawater 3. Stray electrical currents 4. Each of the above
What is the specified replacement period for the sacrificial type of anode?
3 years
What components are installed to protect valves and the sea chest?
Steel waster pieces
Which of the following is NOT an advantage of sacrificial anodes?
Reduced noise level around the hull
What material is used to make the impressed current cathodic protection system anodes?
A platinum-coated rod
What is the current rating of a 4-foot anode?
75 Amps
As used with cathodic protection systems, the shaft grounding assembly grounds which of the following components?
The propeller shafts
What is the purpose of the large loop placed in a rudder grounding strap?
To permit full rotation of the rudder stock
What is the voltage range developed between a disconnected platinum anode and the hull?
1.0 to 2.0 Vdc
What is the optimum polarization range of the ships hull-to-reference electrode potential?
-0.80 to -0.90 Vdc
Which of the following components make(s) up the visual landing aids (VLAs) aboard air-capable ships?
1. Lighting 2. Approach aid 3. Deck markings 4. All of the above
Which of the following phrases describes the stabilized glide slope indicator (GSI) system?
An electrohydraulic optical landing aid
The GSI functions in which of the following ways?
The reference light mounted inside the GSI is kept steady as the ship moves, allowing the pilot to land safely
The stabilized GSI platform receives its reference signal to remain level from
the ship’s navigation gyro
(i think)
The GSI hydraulic pump supplies oil to the hydraulic actuator at what specific pressure?
1,400 psi
Which of the following components are contained in the GSI lamp house assembly?
1. Three source lights 2. A vent fan 3. An optical lens 4. All of the above
The homing beacon is (a) what color lamp mounted on (b) what component?
white, located on the mast
Of the lists shown below, which one indicates the three colors of the GSI light bars?
Red, green, and amber
Edge lights are red omnidirectional lamps that can be seen in any direction above deck level.
true
What color are the line-up lights?
white
Which of the following documents is/are considered legal records?
1. Engineering Log 2. Engineer’s Bell Book 3. Both 1 and 2 above
Which of the following is information that should be entered in the Engineering Log?
1. Injuries to personnel within the department 2. Mileage steamed for the day and fuel expended3. Major speed changes and average hourly rpm 4. Each of the above
The responsibility for the daily verification of the accuracy and completeness of the Engineering Log rests with the
Engineering Officer
The responsibility for making entries in the Bell Book rest with the
throttleman
Neat corrections and erasures are permitted in the Engineer’s Bell Book if they are made only by the person required to sign the record for the watch and if the change is neatly initialed in the margin of the page.
true
For a list of the engineering records that must be kept permanently, you would refer to what publication?
