Relative Velocity

Question 1

What are the 3 parts of a relative velocity triangle

Answer 1

1. Relative speed
2. Relative course
3. Relative velocity

Question 2

Define CPA and describe its meaning

Answer 2

Closest point of approach

Full area of interest around a ship where own ship could colide with another ship

Question 3

Which tote would you find the CPA of a track

Answer 3

Collision avoidance tote

Question 4

In which tote are relative velocity calculations shown in

Answer 4

VDR

collision avoidance tote

Relative velocity

Question 5

What does the SHOW/HIDE toggle do in the Collision Avoidance tote

Answer 5

Shows or hides area of interest

Question 6

What 2 options do you have in the drop down menu when you select INTERCEPT in the Relative Velocity Tote

Answer 6

Time

Speed

Question 7

List the seven Relative Velocity Calculations that CMS can carry out

Answer 7

Intercept

Close to

Reach position

CPA

Pass

Open to

Make good

Question 8

In the collision avoidance tote under the PRIORITY toggle: list and define the 3 options

Answer 8

Distance - Starts at lowest range and goes up in sequential order

Time at - Predefined time to get somewhere

Time to go - How long left

Question 9

In the collision avoidance tote what are the numeric values of the area of interest (AOI) and the alert/CPA radius

Answer 9

AOI - 2 - 20nm

Alert/CPA radius - 0.2 - 8nm