SDZ Construction: 120mm Tank Cannon Inter-service Resident Range Safety Course (Intermediate)

SDZ Construction:120mm Tank CannonInter-service Resident Range Safety Course (Intermediate)

August 2003

120mm Ammunition

August 2003

Weapon:

Ammo Type:

Distance X:

Angle P:

Distance W:

Area A:

Area B:

Map Scale:

Map Sheet:

Map Series:

Map Edition:

Date:

Name:

Legend for 120mm Tank Cannon

August 2003

Constructing 120mm Tank Cannon SDZConstruct a 120mm tank cannon SDZ for that weapon firing the M830 HEAT-MP-T cartridge into steel.

Dimensions of the SDZ for this weapon system are given in DA-PAM 385-63, Chapter 12, Table 12-2.

First, plot the firing point, target, and then establish the gun target line.

August 2003

Plot the firing point.

Establish the gun target line.

Plot the target.

August 2003

From Table 12-2, find Distance X (steel).

Distance X =6589m (ˆ6600m)

Annotate Distance X on the legend. D

ista

nce

X

August 2003

At the firing point, measure 5° from the left and right of the gun target line.

5°

Draw tic marks as shown.

Dis

tan

ce X

August 2003

To establish the lateral limits of the Dispersion Area, draw a straight line from the firing position through each tic mark out to Distance X.

This completes the Dispersion Area.

5°

Dis

tan

ce X

DispersionArea

August 2003

For the Ricochet Area, on Table 12-5, find the measurement for Distance W (steel).

Distance W =600m

Dis

tan

ce X

Lightly draw lines perpendicular to the limits of the Dispersion Area. Dispersion

Area

August 2003

Draw tic marks at the measurement for Distance W on the lines just drawn.

Draw straight lines through the tic marks.

Dis

tan

ce X

DispersionArea

August 2003

On Table 12-2, find the Angle P.

Angle P = 12°

Draw tic marks.

At the firing point, measure 12° from the left and right limits of the Dispersion Area. D

ista

nce

X

12°

P PDispersionArea

August 2003

This completes the Ricochet Area.

Draw a straight line from the firing point through each tic mark just drawn.

12°

P P

Dis

tan

ce X

Annotate the Ricochet Area on the legend.

RicochetArea

DispersionArea

August 2003

Dis

tan

ce X

Dis

tan

ce X

Erase any unnecessary lines.

From the firing point, scribe an arc between the left and right limits of the Ricochet Area. Use Distance X as the radius.

RicochetArea

DispersionArea

August 2003

Erase any unnecessary lines.

From the firing point, scribe an arc between the left and right limits of the Ricochet Area. Use Distance X as the radius.

Dis

tan

ce X

RicochetArea

DispersionArea

August 2003

Lightly draw lines perpendicular to the limits of the Ricochet Area.

Draw tic marks at the measurement for Area A.

On Table 12-2, find the measurement for Area A.

Area A =1,125m(ˆ1,150m)

Dis

tan

ce X

RicochetArea

DispersionArea

August 2003

Draw straight lines through the tic marks.

Lightly draw a line extending the gun target line the measurement of Area B.

On Table 12-2, find the measurement for Area B.

Area B =1,125m(ˆ1,150m) D

ista

nce

XRicochetArea

DispersionArea

August 2003

Draw a tic mark at the measurement for Area B.

Place the needle of the compass at the firing point and scribe an arc through the tic mark between the limits of Area A.

25°

From the firing point, measure 25° to the right and left of the limits of the Ricochet Area.

RicochetArea

DispersionArea

August 2003

Dis

tan

ce X

25°

Area B

Area A

Draw tic marks.

From the firing point, draw straight lines out through the tic marks as shown.

This completes Areas A and B.

Erase any unnecessary lines.

RicochetArea

DispersionArea

August 2003

Dis

tan

ce X

Area B

Area A

Draw tic marks.

From the firing point, draw straight lines out through the tic marks as shown.

This completes Areas A and B.

Erase any unnecessary lines.

RicochetArea

DispersionArea

August 2003

Weapon: 120mm Tank

Ammo Type: M830 HEAT-MP-T

Distance X: 6589m (ˆ6600m)

Angle P: 12°

Distance W: 600m

Area A: 1125m (ˆ1,150m)

Area B: 1125m (ˆ1,150m)

Map Scale: 1:50,000

Map Sheet:

Map Series:

Map Edition:

Date:

Name:

Legend for 120mm Tank Cannon