Relative
longer
arc
steel
3 minutes
true
triangle
which of the following is true
false
relative
false
ETA at the pilot station
true
true
false
Magnetic Compass
Precession
Errors
GPS
GPS
Term that indicates your GPS receiver is using satellites with the best geometry to yield a fix?
Positional Dilution of Precession
What's the minimal # of satellites needed for a 3D Fix?
4
What type of speed does a GPS Receiver calculate?
Speed over Ground (SOG)
How many orbital planes do GPS satellites use?
6
What segment of the GPS system incorporates the satellite?
Space Segment
What segment of the GPS System does the Master Control Station (MCS) at Schriever Air Force Base Reside?
Control Segment
The ___ is transmitted via the carrier signal from a GPS satellite with info regarding its position, time, and the positions of the other GPS satellites in orbit?
Almanac
The use of grand stations in DGRV systems are used for?
Calculating
(T/F) A DGPS Position can get within <10 cm?
True
AIS Transmission would wall within which frequency range?
VHF
What two marine band channels are reserved for AIS?
87B & 88B
Which class of AIS transmission is on SOLAS vessels?
Class A
How often is dynamic info updated?
Depends on speed and maneuvering
How often is static info updated?
Every 6 minutes
(T/F) Info denied from AIS is 100% accurate?
False
As your ship moves from deep water to shallow water, how would you expect the ship handing characteristic "tactical diameter" to change?
Increase (Sharper turns in deep water)
(T/F) The only effective method of slowing a ship is to stop the engine, and if necessary, go astern.
False
Block coefficient is?
The percentage of a rectangle made by LWL BWL draft filled by the ship's hull.
The most common type of Engine that are used for main propulsion on merchant ships are?
Diesel
A VLCC with 30000 shaft horsepower will be slower to respond to engine movements and has less stopping power than a smaller ship because it has a?
Smaller power to weight ratio
Generally, you can best keep the vessel under steering control when the vessel has?
Headway
On a vessel with a single screw, right handed propeller that is dead in the water, no way on, if the rudder is amidships and half astern is ordered on the engine, the bow will move?
To starboard
The pivot point of a vessel going ahead is?
About 1/3 of the veesel's length from the bow
When backing down with sternway, the pivot point of a vessel is?
About 1/4 of the vessels length from the stern.
In relation to a turning circle, the term "transfer" means the distance?
Gained at right angles to the original course
What position should your rudder be if you wanted to use "kick ahead" to starboard with a minimal headway achieved?
The force exerted by a propeller that tends to throw the stern right or left is called?
Side force
The term used to define the minimum speed which a rudder may still be effective to steer a vessel?
Bare steerageway
When attempting to stop a vessel by backing the engines, which of the following characteristics contribute the mast to the vessel maintaining her forward speed over ground?
Displacement
A vessel's draft would be an example of which type of his info?
Static
A class A AIS transponder should have effective range of?
20 to 30 miles
(T/F) A gyrocompass repeater is always perfectly aligned to the master gyro.
False
Point "E" is when the rudder command is initiated, the term gives to the initial movement of the stern is?
Kick
Advance is represented by the letter
B
Transfer is represented by the letter
A
Final diameter is represented by the letter
C
Tactical diameter is represented by the letter
G
Which autopilot function takes highest priority over other autopilot settings?
Rudder Limit
What sensor input is needed in order for an autopilot in heading control?
When steering with autopilot in heading control (ROT) mode, what effect will decreasing the Rate of Turn have on the radius of turn?
Increase
Which ship has the pivot point further forward when going ahead at the same speed?
Which of the following descriptions of steering systems modes is incorrect?
COG control does not take into account set and drift
The command given to a helmsman to steer on the current gyro or magnetic course is?
Steady
If your current command is "Left 15" and the conning officer gives the command "ease to 5", you would?
Put the rudder on left 5
Upon being relieved from the helm, it is a costumary procedure to repeat which of the following so that the conning officer and/or pilot can concur?
Gyro Heading
GPS receivers determine their range from a specific space vehicle (satellite) by measuring what?
Measures difference between time of signal transmission & signal reception
Which of the following is NOT an advantage of a twin screw vessel over a single screw vessel?
Lower initial cost and maintenance