Intercept

2

Lesson Overview• Intercept

3

Intercept• Allows us to close with a contact in

order to do whatever we need to do:• get within missile / gun range;• board, search, inspect, (and sieze);• search and rescue…

4

Intercept• Your CPA at intercept will be 0

yds.• Three elements

• course• speed• time to intercept

5

0800

0803

Computing anIntercept Course

1. Find contact’s course and speed.

er 315°, 15ktsem 263°, 10.5kts

6

0800

0803

Computing anIntercept Course

2. Draw a new DRM from M2 to the center. This new DRM is CBDR.

7

0800

0803

Computing anIntercept Course

3. Parallel new DRM to end of em vector.

8

0800

0803

Computing anIntercept Course

This new rm vector represents all the possible courses and speeds to intercept the contact.

9

0800

0803

Computing anIntercept Course

The course you pick will be determined by: course, speed, or time required to intercept.

Intercept usingmaximum speed

Max speedis 30kts

10

0800

0803

Computing anIntercept Course

3. Draw the new er vector to where the 30kts ring intercepts the rm vector.

Intercept Course005°, 30kts

11

0800

0803

Computing anIntercept Course

4. Determine time of intercept.

Intercept Course005°, 30kts

0805