Weapons Flashcards
What systems overall make up the MK 34 Mod 7 GWS?
Mk45 Mod 2 5”
54 Light Weight Gun Mount
Mk160 Mod 15 Gun Computer System
Mk 20 Mod 0 (D) Electro-Optical Sighting System
What are the colors of 5” projectiles?
Blue: training/inert
Olive drab with yellow band: high explosive
Brown with white band: illumination
Walk through how a 5” round makes its way from deep mag to being fired
1) Round is loaded at the lower loading station
2) Round is brought up via the lower hoist to the upper loading station from intermediate levels
3) Round is inserted into the drum at the upper loading station
4) Round indexes counter-clockwise twice to the transfer station
5) Fuse setter comes down and sets fuse
6) Round is pushed into the upper hoist
7) Upper hoist raises round into cradle/rammer holds round in cradle
8) Upper hoist lowers
9) Cradle swings up into ramming position
10) Rammer drives round into the breech
11) Rammer retracts
12) Breech block closes halfway to prevent round from falling out of breech
13) Cradle lowers back down to the upper hoist
14) Breech block closes fully
15) Empty case tray lowers behind breech block
16) Gun fires, recoils, and counter recoils
17) Breech block raises and empty case is ejected into empty case tray
18) Empty case tray raises
19) Empty case tray ejector pushes empty case onto the forecastle
What are the two safeties of the 5”?
Intrusion barrier: keeps personnel out of the upper gun and when opened, prevents the upper gun from lighting off
Safety link: keeps gun in/out of battery depending on the current weapon posture
What are the four primary missions of the Mk 20 EOSS?
Target Acquisition, Spotting, Battle Damage Assessment, Laser Guided HSMST
What is the secondary mission of EOSS?
Man Overboard
What about the 5” round is different than all other rounds onboard?
The projectile and propelling charge are separate.
What warfare areas are covered by the Mk 34 GWS?
AW, SW, NSFS
What is the smallest radar onboard?
Velocimeter, sends a pulse when a 5” round is fired and receives the velocity of the projectile in the air.
What are the firing rates and ammo capacities of the Mk 38 Mod 3?
Low rate: 100rds/min
High rate: 180rds/min
2 feed assemblies at 84 rounds each
What is the last line of defense against air attacks?
CIWS
What are the 5 safeties of CIWS?
Pre-arm/arm/safe switch
Hold fire switch
Fire integrity key switch
Clearing sector holdback tool
Mount safety switch
What are the fire rates for CIWS?
Air: 4500rds/min
Surface: 3000rds/min
When CIWS is not in weapons posture, what is loaded in it and why?
Dummy rounds for counter balancing the mount
What is the maximum range and rate of fire of the M9?
1800m
45rpm
