12-inch A.P. Mk 18 Mod 112-inch H.C. Mk 17 Mods 1 and 2, and Mk 22
U.S. EXPLOSIVE ORDNANCE
PART 1 - PROJECTILES, PROPELLANT,
AND PROECTILE FUZES
Chapter 1 - Projectiles
Section 8 - 12-INCH PROJECTILES
12-inch H.C. Mk 16 Mods 1 and 2, and Mk 21

Guns used in

12"/50

Over-all length, inches

 

With nose fuze

43.76

Without nose fuze

40.285

Diameter of base, inches

11.977

Distance base to band, inches

1.0

Width of band, inches

4.0

Diameter at bourrelet, inches

11.977

Filling

Explosive D

Weight of filling, pounds

58.20

Weight of loaded projectile, pounds

740

Charge/weight ratio

7.86%

Primer

Mk 15 Mod 1

Tracer

Mk 5

Fuzes

 

Base

Mk 28 "green stripe"

 

Mk 38 Mods 0 and 1

 

Mk 48 Mods 0 and 1

Nose

Mk 29 Mods 1, 2, and 3 (P.D.F.)

 

Mk 42 Mod 0 (M.T.F.)

 

Mk 62 Mod 0 (M.T.F.)

Auxiliary Detonating Fuze

Mk 17 Mod 8 "green stripe"

 

Mk 35 Mod 0

 

Mk 55 Mod 0

 

Booster Mk 5, or a special 0.53 pound pres-sed TNT booster, is also used under the au-xiliary detonating fuze.

The 12-inch H.C. projectile is merely a redesignation of the Mk 16.

The Base Fuze Mk 39 repleaces the original "green stripe" Base Fuze Mk 28; the Auxili-ary Detonating Fuze Mk 35 replaces the original special "green stripe" Mk 17 Mod 8. These Fuzes are now being replaced by the Base Fuze Mk 48 and the Auxiliary Detonat-ing Fuze Mk 55.

The Nose Fuze Mk 62 is the preferred nose time fuze.

Figure 62. 12-inch H.C. Mk 16 Mods 1 and 2

12-inch A.P. Mk 18 Mod 112-inch H.C. Mk 17 Mods 1 and 2, and Mk 22